[ Tenses ]
After he ______ in the environmental campaign, he stopped using plastic bags.
A. participates
B. has participated
C. had participated
D. will participate
Select your answer:

Random Topics:
If Conditional Zero and OneAuxiliary and Modal VerbsNoun ClauseFuture Continuous, Future Perfect and Future Perfect ContinuousCorrelative ConjunctionPerfect Tenses of VerbsRelative Clauses PronounsDemonstrative PronounsQuestion WordsAdjectives or AdverbsOther quiz:
Grammar › ViewThe doctor said that the patient’s flu was ____ than mine.
A. better
B. bad
C. worst
D. worse
Modal Verbs › View
Initially I was opposed to the idea, but after I had seen the research, I…………..that the project was a good one.
A. must have agreed
B. would have agreed
C. ought to agree
D. had to agree
