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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
