If you want to be a doctor like Zhong Nanshan,hard work is the key to .
A.treasureB.beautyC.successD.health
My mother was badly ill in hospital yesterday. I had to look after her, so I didn't go to have the picnic.
______.( )
A.Never mind
B.I am sorry to hear that
C.No problem
The man______ is talking to my math teacher is my father.( )
A.whoB.whichC.what
_____ Wugang Airport_____ last year?( )
A.Did; buildB.Had; builtC.Was; built
Must I go home now?
No, you_______.( )
A.mustn'tB.needn'tC.shouldn't
Guangzhou is one of _____cities in China.( )
A.the biggestB.big
C.bigger