A library with five thousand books ______ to the nation as a gift.
| A．is offered | B．has offered | C．are offered | D．have offered |
_________ impressed the visitors was _______ the trees were so tall in Vancouver.
| A．that; that | B．what; what | C．what; which | D．what; that |
__________ a terrible storm would attack the old town.
| A．Word came that | B．Word that came | C．Word came which | D．Word comes that |
After entering the meeting hall, Mike _______ a friend and went over to greet him.
| A．knew | B．searched | C．spotted | D．realized |
The aging population in China will greatly _______ the whole society.
| A．effect | B．effort | C．affect | D．afford |
----Why didn’t you tell me about the meeting?
----I ______ tell you the day before yesterday. You just forget it.
| A．do | B．did | C．had to | D．must |