Plants _________carbon dioxide and at the same time _________oxygen. So we may put some in our bedrooms to purify the air.
#65276
A
take in, give out
B
take up, give off
C
take over, give in
D
take off, give up
推荐题目
--I think the green coat _________ her very well.--That's right. Why not buy one for your daughter?
#82804
A
is fit
B
matches
C
suitable
D
fit for
--- Can I help you, sir?---I’m afraid you can’t. I have my students’ papers________.
#66178
A
to be graded
B
graded
C
grade
D
to grade
I was just chatting with the director when a stranger ________.
#64291
A
cut in
B
cut down
C
cut off
D
cut up
The sign _____ “In case of _______ fire, break the glass and press _______ red button.”
#64402
A
reads,不填；the
B
writes,不填；the
C
reads, the; the
D
writes, a; a