Millions of trees around our city every year. Our environment is gett

题型：专项题难度：来源：

Millions of trees            around our city every year. Our environment is getting better.  [     ]
A. are planting
B. were planted
C. planted
D. are planted

答案

举一反三

Professor Yi Zhongtian _ to the Talk Show on CCTV-1 last weekend. [ ]

A. invites
B. invited
C. was invited

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Do you know when basketball             ?      [     ]
A. is invented
B. was invented
C. has invented
D. had invented

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Mike wasn"t at home yesterday. He       to  help with Jenny"s English.    [     ]
A. was asking
B. is asked
C. is asking
D. was asked

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-Who is the little baby in the photo, Susan?
-It"s me. This photo     ten years ago.      [      ]
A. takes
B. is taken
C. took
D. was taken

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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

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