We have worked so long．Shall we stop ______ a rest？（ ）
A．haveB．to havingC．havingD．to have
Which of the following is red？（ ）
A．Fe2O3B．NaCIC．Na2CO3D．NaHCO3
Which word goes with the sound /sneik/？（ ）
A．snackB．smileC．stateD．snake
The movie____I have seen twice is The Wandering Earth．（ ）
A．whoB．whichC．whereD．when
We are supposed____some housework with our parents when we have free time．（ ）
A．to shareB．sharingC．sharedD．share
Tom watched the World Cup ____11：30 last night．（ ）
A．WhenB．unlessC．untilD．as soon as