Don’t answer the phone when the cell phone is being charged, for it ________ be very dangerous sometimes.
A. shall B. should
C. can D. must
Whatever happens ,Ben, ________ drugs.
A. doesn’t take B. not take
C. not taking D. don’t take
After _______ seemed like an hour, Michael started off on his bike for _______ his dream leads him.
A. what; what B. what; where
C. which; what D. that; where
Only under special circumstances ________to use the fire hose, otherwise they will be punished.
A. are people permitted
B. people are permitted
C. people permit
D. do people permit
Jessica suggested the problem worth paying attention ______ at the meeting.
A. to be discussed B. to been discussed
C. being discussed D. be discussed
--- The news that the scientists in China are trying the ways to reduce the fog and haze was? ---- Top notch! Never have I seen _____ before。
A. a better one B. a worse one
C. the best one D. the worst one
