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-- What can trees do _________ us ?--- They can _________ harmful gases and produce oxygen .
#58609
A
helping , take in
B
to help , take in
C
helping , take out
D
to help , take care
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I had a bad cold. The doctor asked me ______ in bed for a good rest.
#52491
A
staying
B
stays
C
stay
D
to stay
You can      your English teacher      advice about improving your English.
#59181
A
ask; for
B
talk; about
C
speak; to
D
tell; in
I think this bike belongs         our teacher. She likes red bikes.
#56891
A
with
B
to
C
/
D
of
）I’ll_________ advertisements after school so that we can tell people about the park clean-up.
#58935
A
put on
B
hand in
C
put off
D
hand out
The students like to go ________ a trip________ spring.
#54453
A
on; on
B
in; on
C
to; in
D
on; in