[ Tenses ]
My friends ___ visited Niagara Falls before.
A. have
B. had
C. are
D. will

Random Topics:
So or SuchNoun Phrases and Verb PhrasesNoun Verb AgreementAdjective ClausesBasic Grammar-ing &-ed AdjectivesVerb + PrepositionFirst ConditionalWish SentenceConstrative ConjunctionOther quiz:
Second Conditionals › ViewIf the weather were good, we ______ on a picnic.
A. will go
B. went
C. would go
D. would went
Grammar › View
I enjoy reading this new magazine. ___, it has good articles.
A. Moreover
B. Nevertheless
C. However
