问题
The floor is clean and dry now. Who _______?— Sorry, I don’t know.
A:mopped it up
B:has mopped it up
C:has mopped up it
D:mopped up it
B:has mopped it up
C:has mopped up it
D:mopped up it
正确答案是：
同类题型
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In China,people like eating some yin food ______tofu. [ ]
He told us that where ______ a picnic was not decided yet.
Simon usually plays_______ guitar on Sunday morning and plays_______ chess on Sunday afternoon.