Jack’s sister has been a tour guide _______two years ago.
#49306
A
for
B
since
C
about
D
in
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I’m ___ duty today. I must clean the classroom _____ school.
#47280
A
after; on
B
in; before
C
on; after
D
for; in
Her computer is different_______ mine.
#48635
A
at
B
from
C
with
D
on