36.Everything on the earth ______ all the time.
a. is changingb. is changedc. has changed d. has been changed
37.We ______ fine weather for the past few days.
a. haveb. are havingc. have been hadd. have been having
38.It ______ every day so far this month.
a. is rainingb. rainsc. has rainedd. has been rained
39.no one can prove that the earth ______ not round.
a. is beingb. is to bec. isd. has been
40.“There she ______!We needn’t wait any longer.”
a. comesb. has been comec. has been comingd. is to come
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