—Why didn’t you go to yesterday’s meeting? —I would have but I ______too busy working on the important experiment.
#104533
A
had been
B
was
C
were
D
am
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 Facing danger, he always _____ calm.
#103863
A
seems
B
remains
C
becomes
D
appears
The two friends ______on the Internet for three hours, and they would go on till the next morning.
#101929
A
have been chatting
B
had been chatting
C
were chatting
D
had chatted