______ your hand over your mouth when you cough. 
#66193
A
Put
B
Putting
C
To put
D
To be putting
推荐题目
___ wonderful time they had on the Chidren’s Day!
#66263
A
What a
B
What
C
How a
D
How
“___________that again!” father shouted to me when I was found playing with fire.
#66023
A
Never to do
B
Don’t never do
C
Do never
D
Never do
Will you please ______ me a cup of tea?
#59426
A
take
B
to take
C
to bring
D
bring