Many air flights _________because of the eruption of the volcano, in _______case, many passengers had no choice but to take a train. 
#103338
A
had been cancelled; which
B
have been cancelled; what
C
had been canceling; that
D
have been canceling; where
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The whole family _______ to Shanghai for holiday next week.
#103016
A
is going
B
are going
C
goes
D
have gone
—What about the books?—Books of this kind______ well.
#104365
A
sell
B
sells
C
are sold
D
is sold
— Are these seats available?— Sorry, sir. The seats _____.
#101222
A
have reserved
B
are reserved
C
reserved
D
are reserving
 I________ an important conference at 10 o’clock this Sunday morning.
#100889
A
will have attended
B
will be attending
C
have been attending
D
have attended