[ Passive Voice and Modals ]
They _________________________ complete their parts of the assignment, or we will fail.
A. have
B. has to
C. must to
D. must

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Grammar › ViewWe __________ each other since our secondary school days and we are still in touch with one another.
A. know
B. have known
C. had known
D. have been knowing
Grammar › View
What is the pronoun in the sentence?
He is my best friend.
A. He
B. is
C. my
D. friend
Verb Tenses › ViewHe had ? (to make) a lot of progress before he got stuck.
A. made
B. makeed
C. maden
D. maked
Grammar › View
I’d been eating vegetarian meals………….. when I gave up.
A. three times
B. for three years
