-May I open the window to let in some fresh air?
| A．Come on! | B．Take care! |
| C．Go ahead ！ | D．Hold on ！ |
－Look!Thetelephoneisbroken.Someonedamagedit________purpose.
－Thatmayberight.Butperhapsitwasbroken_________accident.
| A．on;by | B．by;by | C．on;on | D．by;on |
He ________ ill last week and stayed in bed _______ he was well.
| A．was; when | B．fell; until | C．was fallen; till | D．had been; before |
There has been__________ accidents on this part of road.
| A．a number of | B．the number of | C．a series of | D．plenty of |
I don’t have time for a drink now, but I’ll ________ you later.
| A．take part in | B．attend | C．join | D．join in |
Is this one different ________ that one ________ color?
| A．in; in | B．from; from | C．from; in | D．in; from |