2022年英语专四语法模拟练习题第28期

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　　1.___ he be free tomorrow, he would come.

　　A.Would

　　B.Should

　　C.Has

　　D.Were to

　　2.___ up with your classmates, you must study hard right now.

　　A.To catch

　　B.Caught

　　C.Being caught

　　D.Catching

　　3.The mother was afraid to let the boy ___ the street himself.

　　A.to risk crossing

　　B.risk crossing

　　C.to risk to cross

　　D.risk cross

　　4.John had the report ___ as soon as he finished ___ it.

　　A.to be typed, to write

　　B.typed, to write

　　C.being typed, writing

　　D.typed, writing

　　5.There is no easy solution to Japan's labor ___.

　　A.decline

　　B.vacancy

　　C.rarity

　　D.shortage

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