问题

I came all the way to inform you of the time andplace of the meeting—You could have _____ yourself the trouble

A:I found
B:I have found
C:did I find
D:have I found

正确答案是：

同类题型

It is ______ that he will come to help soon because he has just gone out.

If you often feel tired and can’t focus your attention，that is________you have to stop working too hard and to have a rest[ ]

I won’t forget my teacher because she ________so kind to me since I came to this school

— No, It’s on the sofa.

In the piano contest, my brother didn’t play well and I did_____.