When I meet new words while reading, I always ________ them _________ in the dictionary. 
#53882
A
look; up
B
pick; up
C
give; up
D
look; out
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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
This orange sweater looks very nice. Can I _______?
#56255
A
try on it
B
try them on
C
try it on
D
try on them