Which of the following does paper burn in?
#42781
A
CO2
B
N2
C
He
D
O2
推荐题目
 ________ do you take?        ----- Size M.
#40293
A
What size
B
What colour
C
How much
D
How often
The _______ news made all of us very _____.
#41216
A
excited , exciting
B
exciting , excited
C
exciting , excited
D
excited , excited
Help ________ to some beef, Lucy and Lily. It’s very delicious.
#40695
A
yourself
B
yourselves
C
herself
D
themselves
The train is going _______ the tunnel. Then it will go ______to the center of the city.
#36769
A
through; towards
B
through; straight 
C
across; towards
D
across; straight