Choose the most suitable form of verb for the sentence below.
They ________ each other for a long time.
A. are knowing
B. have knowing
C. know
D. have known

Random Topics:
Conditionals III - Mixed 1st, 2nd & 3rd ConditionalsModals and Active and Passive VoiceFragment, Comma Splice and Run -on SentenceApostrophes and Quotation MarksPast Perfect and Past Perfect Continuous TenseClauseCommasIdentify The TensesAdverbContrastive ConjunctionOther quiz:
Conditional Sentences › ViewIf her team wins the championship, Grace will be very happy.
A. Zero Conditional
B. First Conditional
C. Second Conditional
Grammar › View
If I were in your shoes, __________.
A. I will say sorry to them
B. they would buy them for me
C. I would apologize to them
D. they can have them
Tenses › ViewAbdullah is 85 years old, and he _____ a lot of interesting experiences in his life.
A. is had
B. has had
C. had
Subject Verb Agreement › View
Choose the sentence with correct subject-verb agreement:
A. The group of tourists are exploring the city.
B. The group of tourists is exploring the city.
C. The group of tourists be exploring the city.
D. The group of tourists were exploring the city.
