Every student had to hurry.There __ no buses in fifteen minutes

问题描述:

Every student had to hurry.There __ no buses in fifteen minutes
A was
B were
C would be
D had

选择C,in fifteen minutes 表示将来时态,在15分钟之内都不会有巴士过来,而看见had的时候,就知道这里应该是过去时态,所以这里应该用过去将来时.这里你应该纠结的是was和would be吧,注意in后面加时间一般都是表示将来时.