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________ the students in this primary school is about three thousand; ________ of them are girls．

A．A number of; two third

B．The number of; two thirds

C．A number of; two thirds

D．The number of; two third

We're told ________ here and there．It's our duty to keep the street clean．

A．not to park

B．not to spit

C．don't draw

D．don't pick flowers

－Have you heard of the accident about Lucy and her father?

－Accident?No, I haven't．Tell me about ________．

A．it

B．her

C．him

D．them

All of the following are school rules except“________”．

A．No smoking

B．Don't fight

C．Slower than 80 km

D．Save water

I hope to visit the USA ________ in the future．

A．sometimes

B．some times

C．sometime

D．some time

－Look!Mr Wu is on the other side of the street．

－It ________ be him．He has gone to Beijing．

A．mustn't

B．can't

C．shouldn't

D．won't

I left my umbrella in my room．Could you wait ________ I go back to get it?

A．when

B．if

C．while

D．before

－Which do you prefer, coffee or cola?

－________, thanks．I'd like a cup of tea．

A．Either

B．Both

C．Neither

D．None

－How much will I pay for the meal?

－Thirty dollars will ________ all you want to have．

A．use

B．cover

C．cost

D．spend

－Tom is very ________ his new car, an Audi A8．

－Yes, he enjoys driving it to show off．

A．proud of

B．good at

C．interested in

D．famous for