问题

You should have thanked her before she left.—I meant ________, but when I was leaving I couldn’tfind her anywhere.

A:to do
B:to
C:doing
D:to have done

正确答案是：

同类题型

Most of the evidence was destroyed in the fire ______, it would be almost impossible to proveJim guilty[ ]

We should keep people from throwing rubbish into the sea______save the endangered sea animals.

The dayI have been looking forward to will certainly come

．—–Tommy is plone.

I remember sometimes feeling _____ to grow up and be independent