[ Passive Voice with Modal Verbs ]
. The books ______ by next week.
A. must return
B. must be returning
C. must returned
D. must be returned

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Habitual and Continuous TensesVocabulary and ModalsPRESENT SIMPLE vs PRESENT CONTINUOUS + QUANTAdverbs, Prefixes, and SuffixesConjunctions and Verb TensesIndefinite and Intensive NounPresent / Future / Present Progressive / non Action Verbsa, an, the, zero articleGerund vs InfinitivePast Tense vs Future TenseOther quiz:
Tenses and Articles › ViewWhat is the correct form of the present perfect tense of the verb ‘to eat’?
A. have eaten
B. has eaten
C. had eaten
D. ate
Grammar › View
This is the first time we……. such a romantic play.
A. have seen
B. see
C. saw
D. had seen