[ Modal Verbs ]
We ……. not wait here anymore. It’s time to go home.
A. can
B. may

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Vocabulary and Grammar › View. How do the photographs provided by the author support the purpose?
A. by showing what ancient people might have seen in the sky
B. by explaining how comets are formed
C. by demonstrating why people should be scared of comets
D. by providing clues to the contents of a comet
Subject-Verb Agreement › View
Each of the loans ______ been recalled by the bank.
A. Has
B. Have
By the end of next week we……………..(learn) our exam results
A. will learn
B. will have learnt
C. would have learnt
D. had learnt
Grammar › View
Johnny ________ glasses.
A. had
B. wears
C. wear
D. have