It’s necessary for human beings to breath _______ and plants can produce it.
#17259
A
CO2
B
H2
C
O2
D
N2
推荐题目
—Look! The line of people is ______.—Bad luck. I don’t think we can get any tickets.
#17067
A
hopeless
B
helpless
C
endless
D
careless
—I’m going to Hainan on vacation next week.-- __.
#17206
A
Have a good time
B
Not at all
C
Thank you
D
I have no idea
—Hello! May I speak to Lily, please?—_____,I’ll go and get her.
#17246
A
Speaking
B
Hurry up
C
I don't think so
D
Hold on, please
— Got any information about High School Examination? — Well, I was trying to, but found .
#17291
A
one
B
no one
C
none
D
some