______ your hand over your mouth when you cough. 
#66193
A
Put
B
Putting
C
To put
D
To be putting
推荐题目
      it is to jump into a pool or go swimming in a river in summer!
#66118
A
What great fun
B
What a great fun
C
How great fun
D
How a great fun
_____ it is to jump into a river to swim on such a hot day.
#66127
A
What a fun
B
What fun
C
How a funny
D
How a fun
—— What sport do you like best? —— Springboard diving.____ to dive into water from high board! 
#66287
A
What a fun is it
B
How fun it is
C
How a fun is it
D
What fun it is