[ 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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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