Was it not until you began to work —— how much time you had wasted?
| A．did you realize | B．that you realized | C．did you not realize | D．that you didn’t realize |
One-third of the country____covered with trees and the majority of the citizens_______black people.
A is；are B is；is C.are；are D.are；is
—Why does the lake smell terrible?
—Because large quantities of water_______________.
| A．have polluted | B．is being polluted |
| C．has been polluted | D．have been polluted |
The factory used 65 percent of the raw materials,the rest of which saved for other purposes.
| A．is | B．are | C．was | D．were |
The most impressive sight in China，one of the wonders of the world，_____ the Great Wall.
| A．is | B．are | C．was | D．were |
Either you or one of your students___to attend the meeting__ tomorrow.
| A．are; to be held | B．is；being held | C．is; to be held | D．are；having held |
_____, Carolina couldn't get the door open.
| A．Try as she might | B．As she might try | C．She might as try | D．Might she as try |
Where go to spend our summer vacation this year?
| A．do you think can we | B．do you think we can |
| C．you think can we | D．you think we can |
Is that a book on farming?_______,I want to borrow it.
| A．So it is | B．If so | C．So is it | D．So if |
Generally speaking_______acording to the
instructions，the drug has no side effect.
| A．when taking | B．when taken | C．when to take | D．when to be taken |
----Will you go to the party?
----Of course I will .
| A．if invited | B．if having invited | C．if I was invited | D．if I will be invited |
，please start the work tomorrow.
| A．If you are convenient | B．If it is convenient for you |
| C．If it is convenient of you | D．If convenience |
It is often________that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
—There is still a copy of the book in the library.Will you go and borrow_____?
—No，I’d rather buy_____in the bookstore.
| A．it；one | B．one；one | C．one；it | D．it；it |
_____is our belief that improvements in health care will lead to a stronger, more prosperous economy.
| A．As | B．That | C．This | D．It |
We feel our duty to make our country a better place.
| A．it | B．this | C．that | D．one |
—It’s nice.Never before____ such a special drink!
—I’m glad you like it.
| A．I have had | B．I had | C．have I had | D．had I |
--- He was nearly drowned once.
--- When was _____?
--- _____was in 1998 when he was in middle school.
| A．that; It | B．this; This | C．this; It | D．that; This |