问题

By the time some scientists the lost towns, they an awesome historical site.

A:had found,had found
B:found, found
C:found, hadfound
D:had found,found

正确答案是：

同类题型

think your health will soon ______ if you have a holiday on the seaside.

You _____ not get my support ff you do such a thing.[ ]

We _______ very early so we packed the night before．

It’s ____ cold. Would you please closeall the windows— OK. I’ll do it now.

They Shanghai two days ago.—Yes. They for two days.