问题

lled to tell his mother that he couldn’t enterthe house, for he ________ his key at school.

A:had left
B:would leave
C:was leaving
D:has left

正确答案是：

同类题型

They thought too much about______.

I ______ to help you to do homework but Icouldn’t spare any time. I ______ a composition last night and I’ll finish ittomorrow.

下列解释有误的一项是

The infrastructure of a country is 　　　　 makes everything run smoothly， including things like transport， irrigation， electricity， postal service， telephones and schools.

It took _____ building supplies to construct these energy-saving housesIt took brains, too.[ ]