______ your hand over your mouth when you cough.
#66193
A
Put
B
Putting
C
To put
D
To be putting
推荐题目
Please do me a favor ---______ my friend Mr. Smith to Youth Theater at 7:30 tonight.
#66111
A
to invite
B
inviting
C
invite
D
invited
____the speed limits, or you’ll get fined $ 200 for speeding.
#65971
A
If you don’t keep to
B
Keeping to
C
To keep to
D
Keep to
_______it is to jump out of an airplane at 10,000 feet!
#66146
A
What an exciting experience
B
How exciting experience
C
How an exciting experience
D
What exciting experience
Keep practicing and you _____ your English.
#66108
A
improve
B
will improve
C
improved
D
were improving