______ your hand over your mouth when you cough.
#66193
A
Put
B
Putting
C
To put
D
To be putting
推荐题目
I know one of the things I was unsure about was _____ hard it would be to climb this mountain.
#66039
A
what
B
that
C
however
D
how
—I’m so sorry. —________here on time next time, or you'll be punished.
#59385
A
Be
B
Being
C
To be
D
Been
—I'd like to have some lunch but I have to stay here doing my work.—___________ what you want and I can get it for you.
#66307
A
To tell me
B
Telling me
C
If you tell me
D
Tell me