______ your hand over your mouth when you cough. 
#66193
A
Put
B
Putting
C
To put
D
To be putting
推荐题目
--- _______ late for school again, Tim!    --- Sorry, I promise that I _______.
#59380
A
Don’t; won’t
B
Don’t be; won’t
C
Don’t be; don’t
D
Don’t; will
   down the radio. The baby’s sleeping in the next room.
#66231
A
Turning
B
To turn
C
Turn
D
Turned
__________ the window, please. It’s cold.
#59464
A
Not open
B
Don’t open
C
Don’t close
D
Not close
__it is for us to see that he does his work so well! 
#66279
A
What surprise
B
How surprise
C
What a surprise
D
How a surprise