—How do you know that he has bought ___ MP5?--- He wrote ____ e-mail to me yesterday.
#48184
A
a, an
B
an, an
C
a, the
D
the, a
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—It’s meaningful us to do something for people in need.—It’s really nice you to think so.
#47643
A
for; of
B
of ; for
C
for; for
D
of; of
