问题

I have to buy _________of the two books because I don’t know which to choose.
A:every
B:all
C:one
D:both
B:all
C:one
D:both
正确答案是:
同类题型
Giant pandas will have to live if farmers keep ________ their living areas.
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Have you finished your homework yet?— No, I’ll finish it in ________ ten minutes.
Tomorrow is our holiday. What _____ going hiking? — That sounds great. [ ]