题目内容
(请给出正确答案)
[主观题]
A.to requireB.requiredC.requitingD.are required
A.to require
B.required
C.requiting
D.are required
答案
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A.to require
B.required
C.requiting
D.are required
第3题
A.to moving
B.to be moving
C.moving
D.be moving
第4题
We are obliged ______ you ______ your early reply.
A.to, for B.to, to C.for, to D.for, for
第6题
He spends a quarter of the day()
A.to sleep
B.sleeping
C.sleeps
D.to sleeping