Great changes _______over the years．
#41567
A
took place
B
was taken place
C
have taken place
D
happened
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— Mr. Lee _ to a student when I entered the classroom this morning.- He is very patient _ _he is young.
#42134
A
talking; but
B
talks; though
C
was talking, though
D
talked, however
—Hello, Mike. Long time no see. Where are you?—Oh, not only my parent but also I _______ Wuhan for a month.
#41500
A
have gone to
B
have been to
C
has been in
D
have been in