问题
Where’s that report, Daniel—I brought it to you you were in Mr. Black’s office yesterday.
A:if
B:when
C:because
D:before;
B:when
C:because
D:before;
正确答案是：
同类题型
Simon is _______ in ______ stamps.
There is no doubt that the price of oil will______ again in the coming months.[ ]
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