The government has tried to limit the number of private ...

[ Grammar ]

The government has tried to limit the number of private cars _____ the problem of air pollution remains unresolved.

A. when

B. but

C. so

D. if

Select your answer:

Other quiz:

Progressive Perfect and Simple Verb Tenses › View

Rules for Perfect Tenses are…

A. Verbs can change in spelling, stay in past tense, the helping verbs are: has, have, and had

B. Verbs end in “ing” and no helping verb

C. Verbs end in “s”, helping verbs are: is and are

D. Verb spelling doesn’t change, helping verbs are: was and were.

Vocabulary › View

Meager means

A. inaccurate

B. inadequate

C. inspired