-- 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
推荐题目
He          his homework          weekends.
#58931
A
doesn’t; on
B
doesn’t do; on
C
don’t; in
D
don’t do; in
How many pieces can you _______ the cake _________?
#59477
A
be divided; into
B
divided ; into
C
divide; into
D
be divide; into
_________ the bridge, you can see the hospital on your right.
#58809
A
Go cross
B
Go across
C
Across
D
Crossing