Great changes ________ in the city since 1979.
#103885
A
have taken place
B
have taken the place
C
have been taken place
D
have been happened
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Catherine is one of the brightest students who from the Department of Computer Science , Brown University .
#103837
A
is graduated
B
has graduated
C
are graduated
D
have graduated
---- You haven’t got the textbook for my chemistry course yet. ---- I know, and we _____ to get it for the last 5 weeks.
#104715
A
will have been trying
B
have been trying
C
will be trying
D
had tried
I into robots and used to make mobile phones as well as help with medical operations.
#102747
A
have put
B
have been put
C
had put
D
had been put
Wang, I hear that you ______ along the Mekong River. Have you got everything ready?
#100456
A
traveled
B
are traveling
C
have traveled
D
travel
(2014·哈尔滨四校高三统一检测)In fact he lived a comfortable life，but he________about his fate all the time.
#99150
A
is complaining
B
has complained
C
was complaining
D
had complained