So far, the population of China _______ over 1.3 billion. [ ]A. are B.

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So far, the population of China _______ over 1.3 billion. [     ]
A. are
B. is
C. has been
D. have been

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举一反三

—What a beautiful city Wenzhou is!
—Yes. Wenzhou ______ a lot in the last few years. [ ]
A. is changing
B. has changed
C. changing
D. changed

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-Is your uncle a Party member?
-Yes, he _____ the Party four years ago. He _____ a Party member for four years.[ ]
A. has joined, has been
B. was joined, is
C. joined, has become
D. joined, has been

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The teacher, along with some students, _________ a plan for the coming holiday.[ ]
A. have made
B. has made
C. are making

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—Can I see the headmaster at the moment, please?
—I"m afraid not. He _________out. He _________ in 10 minutes.[     ]
A. goes; comes
B. gone, came
C. will go; will come
D. has gone; will come back

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-Hi, John. Shall we go to Australia for the long holiday?
-Sorry. I __________ there twice.[ ]
A. have gone
B. was
C. have been

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