It was clear that a chemical factory had __________the pollution ...

[ Grammar ]

It was clear that a chemical factory had __________the pollution in the local rivers.

A. caused

B. had

C. made

Select your answer:

Random Topics:
Broach vs. Brooch Everyone vs. Every One Adverb Past Perfect vs Past Simple Noun Vocabullary Test Present Tenses Wh-Question Analogy

Other quiz:

Grammar › View

Find the adjective.

A. walk

B. yellow

C. bus

D. bug

Grammar › View

The dog is ______ the house
A. on
B. under

How to use : Read the question carefully, then select one of the answers button.