There has been ____ accidents on this part of road. 
#14351
A
a number of
B
a great deal of
C
a series of
D
plenty of
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 ________ in a heavy rain, my daughter fell ill and couldn’t but______ for a leave.
#11863
A
Caught; to ask
B
Being caught; to ask
C
Catching; ask
D
Caught; ask
The farmers needed________agricultural technology. Therefore,      ________skilled workers were sent there.
#14430
A
a great number of, a large amount of
B
large amounts of, the number of
C
a large amount of, a great number of
D
the amount of, a great number of