They have been skating __________.
#40389
A
for three hours
B
since three hours ago
C
three hours ago
D
since three hours
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Last year, another two beautiful bridges ___________ over the Jialing River.
#39523
A
built
B
are built
C
were built
D
will be built
—How long ________they_________? —Sorry, I don’t know. But I know that Mr. Chen is going to _______a nurse next month.
#37548
A
did; marry; marry to
B
did, get marry; marry with
C
have; got married; marry
D
have; been married; marry