The sense of happiness will increase if you________ what you like to do.
A. do B. did C. will do
How I wish I could sleep longer! However, I had to get up as soon as the alarm clock _________.
A. ran off B. went off C. took off
--Shall we go to the museum?
--All right! I hear them are many first-class photographs________ .
A. on show B. on board C. on sale
Drivers shouldn't be allowed _______ after drinking, or they will break the law.
A. drive B. driving C. to drive
___________ they have some opposite views, they all think Chinese medicine is helpful.
A. Until B. Although C. Since
The talented boy _________ write lyrics when he was at the age of ten.
A. may B. could C. must
