I like getting up very early in summer．The morning air is so good ________．

A．to be breathed

B．to breathe

C．breathing

D．being breathed

________, John returned to school from his hometown．

A．The summer vacation being over

B．The summer vacation is over

C．Because the summer vacation over

D．After the summer vacation being over

Mr．John was so humorous that we had a good laugh ________ the meal．

A．at

B．over

C．in

D．between

Could you ________ this 20-dollar bill ? I need some change to make a phone call．

A．divide

B．tear

C．break

D．cut

The athlete seldom wears anything other than sportswear ________ the season is．

A．wherever

B．whenever

C．however

D．whatever

If the staffs hadn't been working hard in the past two years, things ________ so smoothly．

A．wouldn't be going

B．will not be going

C．haven't been going

D．don't go

Much to his surprise, he invited only twenty friends to the dinner ,but ________ came．

A．twice more than

B．as many as twice

C．twice as many as

D．twice as many

________ Yao Ming has retired from the NBA, the pleasure we have got by watching him play basketball at home and abroad will last long．

A．Since

B．If

C．Although

D．Once

After work I went to the box office to buy the tickets for Kungfu Panda 2, only to be told there was ________ left．

A．nothing

B．none

C．no one

D．neither

She may have missed the train, ________ she won't arrive for another hour．

A．in which case

B．in the case

C．in any case

D．in that case