______ your hand over your mouth when you cough.
#66193
A
Put
B
Putting
C
To put
D
To be putting
推荐题目
The floor is so dirty .Would you please ?
#59450
A
to mop up it
B
mop up it
C
to mop it up
D
mop it up
________ the prices and functions of different types of computers before you make up your mind which to buy.
#66005
A
To compare
B
Comparing
C
Compared
D
Compare
---Is there a No. 2 bus stop near here?---Yes, there is. __________ at the second crossing, and you will find it.
#59393
A
Turning left
B
Turn left
C
To turn left
D
Turns left