Attention， please! Without permission， children are not allowed alone here．（ ）
A．to swimB．swimmingC．swimD．swam
Would you like to go swimming with me， Tom？
Sorry， but our teachers always tell us____in the river．（ ）
A．don't swimB．not swimming
C．not to swimD．to not swim
It's necessary for you _______the classroom clean，class．（ ）
A．keepB．keepingC．to keep
What shall we do this weekend？
We'll drive to Dongjiang Lake boating．（ ）
A．to goB．goC．going
﹣You'd better advise him ______ anything out of the window while driving．（ ）
﹣﹣I will．He has to know it's dangerous．
A．not throwingB．no throwing
C．not to throwD．don't throw
Jack，remember ______ off the lights when ______ the home．
OK，I won't forget，mom．（ ）
A．turning； leavingB．to turn； leave
C．turning； leftD．to turn； leaving
The Chinese team are working hard ________ honors in the 2016 Olympic Games．（ ）
A．to winB．winC．winning
If we want to a good college，we'd better study hard．（ ）
A．goB．goingC．to go
It's necessary for students ______with their teachers．（ ）
A．communicateB．communicating
C．to communicate
She said she hoped ______ her daughter．（ ）
A．to seeB．you to seeC．seeing
Why are you so excited？
Nancy invited me ___________ on a trip to Dongjiang Lake just now．（ ）
A．to goB．goC．going
My teacher asked me ________ the room．（ ）
A．cleanB．cleansC．to clean
What does the sign 
mean？
It tells us____________in public．（ ）
A．didn't smokeB．don't smoke
C．not to smokeD．not smoke
Would you like to go swimming in the river，John？
Swim？Sorry，our teachers always tell us ____in the river alone．（ ）
A．don't swimB．to not swim
C．not swimmingD．not to swim
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