They ______Hong Kong twice.
#63785
A
have gone to
B
have been to
C
have been in
D
have gone in
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— Alvin，are you coming with us?—I'd love to，but something unexpected ________.
#63769
A
has come up
B
was coming up
C
had come up
D
would come up
We complained to the travel agency about the horrible service during our trip，but no one has________by now.
#63750
A
responded
B
deserved
C
recovered
D
survived
He complained that this was the third time he of the changes of the meeting date.
#63781
A
would be informed
B
was informed
C
has been informed
D
has been informed
Years of fighting have ______ the area ______.
#63754
A
remained; in ruins
B
left; in ruins
C
remained; in ruin
D
left; in ruin
-- I have got a headache. -- No wonder. You_________ on the math exercises too long.
#63776
A
work
B
are working
C
have been working
D
worked