题目列表(包括答案和解析)
--Look! It ________ be Jack on the playground.
--It ________ be him. Because I saw him enter the school library just now.
-Look! It __________ be Jack on the playground.
-It ______ be him. Because I saw him enter the school library just now.
A. can; must B. can; cant C. may; mustn′t D. must; can′t
-Look.It must be Jack on the playground.
-It ________ be him.Because I saw him enter the school library just now.
A.mustn't
B.can't
C.may
D.couldn't.
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