They ______ problems. A. caused constantly B. were ...

[ Grammar and Vocabulary ]

They ______ problems.

A. caused constantly

B. were constantly causing

C. constantly causing

D. never constantly were causing

Select your answer:

Other quiz:

Present Perfect and Present Perfect Continuous › View

It ______ since this morning. It’s terrible!

A. has being raining

B. has rained

C. has been raining

D. has been rained

Parts of Speech › View

Replaces a noun
A. Adjective
B. Noun
C. Pronoun
D. Preposition