[题目]They busy doing their homework.A. is B. am C. are D. / 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】They ______ busy doing their homework.

A. is B. am C. are D. /

【答案】C

【解析】

句意：他们正忙于写作业。主语they是复数形式，系动词应用are。故选C项。

练习册系列答案

新课程暑假作业本宁波出版社系列答案

A. for； as B. of； though C. for； though D. of； as

A. Are, am B. Are, is C. Is, are D. Is, is

A. hasB. withC. had D .is having

【题目】These ________ are thirty dollars.
A.T-shirt
B.hat
C.shorts
D.sweater

A. but B. so C. or D. and

A. valuable； to offer B. valuable； giving

C. value； taking D. value； to follow

A. play B. playing C. plays D. playes

【题目】—Why didn't you go to the party yesterday?
—Because my dog was ill. I had to it at home.
A.agree with
B.look after
C.think of
D.wait for

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