问题

It was not until the entrance exams were in sight that__________ that I had so many books tocover and so many exercises to finish.

A:I realized
B:did I realize
C:had I realized
D:I had realized

正确答案是：

同类题型

Participants at the conference were thankful for the information that ________ for them.

Please ________ it up and you’ll succeed ________.

Eating healthy food can help us.

给下面语句排序，衔接恰当的一项是（）①因为较弱的电磁辐射，也会对人的神经系统与心血管系统产生一定的干扰。②人的大脑和神经会产生微弱的电磁波，当周围电器发出比它强数百万倍的电磁波时，人的神经活动就会受到严重干扰。③即使在不太强的电磁波环境中工作和生活，人也会受到影响。④如果长时间处于这种强电磁波的环境中，人会出现头痛，注意力不集中、嗜睡等症状，强电磁辐射会使心血管疾病加重、神经系统功能失调。

He still went to school on time ______ it rained heavily.