问题
I don’t remember how many years ago_____people began to grow crops. [ ]
A: it was when
B: it was that
C:is; play
D: was it when
B: it was that
C:is; play
D: was it when
正确答案是：
同类题型
38 There is a dog over there Look, out______ Be careful!
—Do you know our hometown at all? —No, this is the first time I _____ here.[ ]
By doing part time jobs,students can social experience necessary for their future life. [ ]
The teacher has to ________ the two students as they are always talking in class.