问题

_____if he will come.[ ]
A: I'm sure
B: I'm afraid
C: I'm not sure
D: I think
B: I'm afraid
C: I'm not sure
D: I think
正确答案是:
同类题型
My school is _____ the end of the second road.[ ]
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Michael likes playing piano but he doesn’t like playing basketball.
He wants to be a volunteer teacher in western China when he _______.