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His father is __________ engineer and he works __________ research.
#49406
A
an, on
B
an, with
C
the , on
D
a, with
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 In spring, it is good for you to sleep ________your windows open.
#45891
A
for
B
to
C
with
D
about
---How do you usually go to school?----________
#48173
A
By a bus.
B
On foot.
C
On bike.
D
with car
The lake lies _____ the two villages.
#48073
A
at
B
in
C
between
D
among
It’s not polite to enter the other’s room ________ knocking on the door.
#46186
A
by
B
with
C
without
D
from
——Is the film interesting?——I thought it would be. But         it’s boring.
#48231
A
in all
B
in fact
C
in addition
D
in future