Air pollution levels ___ dramatically since governments worldwide introduced stricter ...

[ Grammar ]

Air pollution levels ___ dramatically since governments worldwide introduced stricter environmental laws.

A. decreased

B. is decreasing

C. decreases

D. have decreased

Select your answer:

Random Topics:

Present Simple Progressive Present Perfect Negative and Interrogative Demonstrative Speech Indefinite Article Intermediate Subject Verb Agreement & Subjunctive Mood Grammar Errors Adjective ending with ED & ING Mixed Conditionals Present Tense vs Present Continuous

Other quiz:

Comparatives › View

Cats/ walk/ quiet/ dogs.

A. Cats walk more quiet than dogs

B. Cats walk more quieter than dogs

C. Cats walk more quiet than dogs

D. Cats walk more quietly than dogs

Present Tenses and Connectors › View

For the three-day event, the company planned not only outdoor activities but also recreational ones. ___, teams were encouraged to share time off to integrate departments.

A. Since

B. Thus

C. However

D. Because