-- 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
Alice ___________ a young man from China two years ago.
#58840
A
married with
B
married to
C
was married with
D
married
He has ______ for some years, but his _____ still makes us very sad now.
#52930
A
been dead, death.
B
death, dead
C
died, death
D
died, dead