Every day I do my homework _____ two hours.
#46569
A
to
B
in
C
for
D
on
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I think ______ is necessary ______ us to do something useful to protect the birds.
#50276
A
this; for
B
it; of
C
this; of
D
it;for
—What happened to Mike? —He had a stomachache. He began to work _______ having breakfast this morning.
#46312
A
with
B
of
C
from
D
without