American English has changed ________ time.There are several reasons ________ this.
#26725
A
over; for
B
for; with
C
in; of
D
during; about
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 We have _______ books in our library.
#27714
A
plenty of
B
great many
C
a great deal of
D
great number of
. I don’t know          if she’s coming.
#27341
A
at certain
B
for certain
C
with certain
D
on certain