So far, the moon___ by man already.
A. is visited
B. will be visited
C. has been visited
D. was visited.
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How many trees ___this year?
A. are planted
B. will plant
C. have been planted
D. planted.
A lot of things ___by people to save the little girl now.
A. are doing
B. are being done
C. has been done
D. will be done.
Neither of them ___ in China
A. is made
B. are made
C. were made
D. made.
Look! A nice picture___for our teacher.
A. is drawing
B. is being drawn
C. has been drawn
D. draws.