一Professor Li, ______the student start at once or wait a while?     一At once.
#88085
A
will
B
shall
C
can
D
may
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Daniel’s family ________ their holiday in Huangshan this time next week.
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A
are enjoying
B
are to enjoy
C
will enjoy
D
will be enjoying
 If it ____for the snow, we____ the mountain yesterday.
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A
were not, could have climbed
B
were not, could climb
C
had not been, could have climbed
D
hadn’t been, could climb