—Why does the lake smell terrible?—Because large quantities of water_________.

题型：同步题难度：来源：

—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

答案

举一反三

This old custom has________ since the 18th century, and remains practically unchanged.     [     ]
A. handed down
B. been handed down
C. handed out
D. been handed out

题型：同步题难度：| 查看答案

________information_________stored in this computer.    [     ]
A. Large quantities of; have been
B. A great many; has been
C. A large quantity; are
D. Quite a lot; is

题型：同步题难度：| 查看答案

Although all of the apples ________, none of them ________ good.[ ]
A. have been tasted; taste
B. have been tasted; are tasted
C. have tasted; taste
D. have tasted; are tasted

题型：江苏期中题难度：| 查看答案

—Would you like to go to the cinema with me tomorrow afternoon?
—I’d like to，Mum，but I _____ to a party by Jane. It is her birthday.[ ]
A. have been invited
B. was invited
C. will be invited
D. am invited

题型：云南省期中题难度：| 查看答案

---When will the expert come and give the lecture on intellectual property?
---Not until our program _______ by the authorities. [ ]
A. approves
B. has been approved
C. is to approve
D. will be approved

题型：江苏专项题难度：| 查看答案