-Did you attend Mary and Tom’s wedding ceremony?
-Yes，but as you know，they________each other no more than 3 months．
| A．knew | B．had known | C．have known | D．have been knowr |
---It was Sunday today, and I _______ up very early.
---So you really had a good rest.
| A．didn’t need to get | B．needn’t have got | C．needn’t to get | D．don’t need get |
By the time he arrived in Beijing, we _______ there for two days.
| A．will have stayed | B．stay | C．have been staying | D．had stayed |
The professor could hardly find sufficient grounds________ his arguments in favor of the new theory.
| A．on which to base | B．which to base on | C．to base on | D．to be based on |
Along with the email was my brother’s promise ______ I came first in the competition, he would buy me an MP4.
| A．what | B．that | C．that if | D．whether |
"We can’t go out in this weather," said Bob, ________ out of the window.
| A．looking | B．to look | C．looked | D．having looked |