It"s reported that the Underground Line No. 3 in our city in 2012. [

题型：专项题难度：来源：

It"s reported that the Underground Line No. 3        in our city in 2012.    [      ]
A. will built
B. has built
C. will be built
D. has been built

答案

举一反三

— Do you plant trees in spring?
—Yes. Many trees          in our city every year.     [     ]
A. are planting
B. are planted
C. were planted

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Last year, Liu Hua, a college student,     to work for the Olympic Games.      [     ]
A. is choosing
B.is chosen
C. was choosing
D. was chosen

题型：专项题难度：| 查看答案

—Look at the sign on the right,
—Oh, parking _       here.    [     ]
A. doesn"t allow
B. isn"t allowed
C. didn"t allow
D. weren"t allowed

题型：专项题难度：| 查看答案

Attention, please. All mobile phones must       before the meeting starts.   [     ]
A. turn
B. be turned off
C. be turning

题型：专项题难度：| 查看答案

We           to close the windows before we left the lab.     [     ]
A. tell
B. told
C. are told
D. were told

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