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
Marry wants to be a famous actress in the _______ / ’fju:t?? /.
#17201
A
favorite
B
free
C
foreign
D
future
It’s nice _______ you _______ me with my lessons.
#16757
A
for, helping
B
for, to help
C
of, to help
D
of, helping
—Your new sweater looks very beautiful, it fits you very well.—__________.
#17243
A
I’m glad to hear that
B
Thank you
C
No, no, yours is better
D
You are right
—Where have you been these days?—I have been to Bei Daihe with a friend .
#17283
A
in Chinese
B
of Japan
C
of American’s
D
from Canada