Simon， do you know who invented the kite？
Sure! It ____ by Mozi over 2，000 years ago．（ ）
A．is inventedB．invented
C．was inventedD．will be invented
Stephen Hawking， a great scientist， died ________ the morning of March 14， 2018．（ ）
A．onB．inC．at
Mom， can you help me wash my clothes？
Sorry， dear． Help ________．（ ）
A．myselfB．ourselvesC．yourself
What do you think of ________ movie Amazing China？
It's wonderful．（ ）
A．aB．theC．/
Could you tell me _____？
I'm not sure， maybe tomorrow．（ ）
A．when does he leave for Changsha
B．when he is leaving for Changsha
C．when is he leaving for Changsha
If you are over 18 years old， you_____ to drive a car in our country．（ ）
A．can allowB．can't allow
C．can be allowed