— Where is Jenny?— She is doing her homework ______ the classroom.
#45807
A
of
B
on
C
in
D
to
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We’d better not keep the lights______ when we have PE classes outside.
#48235
A
off
B
on
C
open
D
closed
–What do you call this in English?–It’s stamp. It is used ____ sending letters.
#50174
A
for
B
to
C
with
D
by
— Is Mr. Brown at home now?—Yes. He usually does exercise______ 7a.m. ______8a.m. in the garden.
#49487
A
between; at
B
from; to
C
at; and
D
both; and