What do you think of yesterday's activity in your community？
Wonderful． A lot of useful advice on self protection________．（ ）
A．is offeredB．are offered
C．was offeredD．were offered
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
Remember _______ some fruit when you come back．（ ）
A．buyingB．to buyC．buy