There are ________ students in our school．（ ）
A．hundredsB．hundreds of
C．hundred of
Hurry up， Jeff! Let's cross the road as fast as possible．
No， you ____． Don't you see the light is still red？（ ）
A．couldn'tB．wouldn'tC．mustn'tD．needn't
Your father has passed the driving test？
Yes． _____my father_____my mother has．（ ）
A．Not only； but alsoB．Neither； nor
C．Either； orD．Both； and
Two tickets for Sunday， please!
Sorry． There is ____left．（ ）
A．nothingB．noneC．someD．anything
Time waits for no man． But some people won't realize the importance of time______it's gone．（ ）
A．asB．sinceC．whenD．until
Li Hua is a volunteer．She will put up a sign to remind people to save every drop of water．Which of the following signs should she choose？（ ）
A．
B．
C．
D．