Residents in several districts have installed small sensors outside their homes to measure local air quality. The network was set (1) .......... after people began to (2) .......... questions about why official readings from one side of the city did not always match what they experienced on busy streets.
The organisers are quick to (3) .......... out that the sensors are not a replacement for professional monitoring. Their purpose is to (4) .......... up patterns that might otherwise go unnoticed and to encourage people to ask informed questions. Volunteers receive training so that they can (5) .......... the difference between a short-term spike and a reliable trend.
The data are displayed online, but the group asks visitors not to (6) .......... conclusions from a single unusual result. Instead, they are encouraged to (7) .......... into account weather, traffic and the location of each device. The project has already (8) .......... up a discussion about how public information can be made easier to understand.
The group publishes short explanations beside unusual readings, rather than allowing the numbers to speak for themselves. This makes the map more useful to residents who want to understand a pattern without assuming that every change has the same cause.
The organisers have invited local health and transport groups to discuss the findings in public meetings. Their aim is not to produce a single verdict, but to make it easier for residents to ask sensible questions about their surroundings.
Residents in several districts have installed small sensors outside their homes to measure local air quality. The network was set (1) .......... after people began to (2) .......... questions about why official readings from one side of the city did not always match what they experienced on busy streets.
The organisers are quick to (3) .......... out that the sensors are not a replacement for professional monitoring. Their purpose is to (4) .......... up patterns that might otherwise go unnoticed and to encourage people to ask informed questions. Volunteers receive training so that they can (5) .......... the difference between a short-term spike and a reliable trend.
The data are displayed online, but the group asks visitors not to (6) .......... conclusions from a single unusual result. Instead, they are encouraged to (7) .......... into account weather, traffic and the location of each device. The project has already (8) .......... up a discussion about how public information can be made easier to understand.
The group publishes short explanations beside unusual readings, rather than allowing the numbers to speak for themselves. This makes the map more useful to residents who want to understand a pattern without assuming that every change has the same cause.
The organisers have invited local health and transport groups to discuss the findings in public meetings. Their aim is not to produce a single verdict, but to make it easier for residents to ask sensible questions about their surroundings.
Question 1
Exam guide & reading text▾
Citizen air-quality network — Part 1: Multiple Choice Cloze
"Citizen air-quality network" is a Cambridge C1 Proficiency Multiple Choice Cloze (Part 1) practice exam. This task tests your command of collocations, idiomatic expressions, phrasal verbs and fixed phrases in context. Read the full text carefully before choosing each option — the correct answer often depends on what naturally follows the surrounding words, not grammar alone. Eliminate distractors that are grammatically possible but semantically wrong, and watch for subtle register shifts between formal and informal usage.
Residents in several districts have installed small sensors outside their homes to measure local air quality. The network was set (1) .......... after people began to (2) .......... questions about why official readings from one side of the city did not always match what they experienced on busy streets.
The organisers are quick to (3) .......... out that the sensors are not a replacement for professional monitoring. Their purpose is to (4) .......... up patterns that might otherwise go unnoticed and to encourage people to ask informed questions. Volunteers receive training so that they can (5) .......... the difference between a short-term spike and a reliable trend.
The data are displayed online, but the group asks visitors not to (6) .......... conclusions from a single unusual result. Instead, they are encouraged to (7) .......... into account weather, traffic and the location of each device. The project has already (8) .......... up a discussion about how public information can be made easier to understand.
The group publishes short explanations beside unusual readings, rather than allowing the numbers to speak for themselves. This makes the map more useful to residents who want to understand a pattern without assuming that every change has the same cause.
The organisers have invited local health and transport groups to discuss the findings in public meetings. Their aim is not to produce a single verdict, but to make it easier for residents to ask sensible questions about their surroundings.