----- Now that you like the portable personal computer so much, why not buy one? It is of great use to your work.
---- Well, I can’t afford _____ computer at present．
| A．a such cheap | B．so expensive a |
| C．so an expensive | D．so cheap |
.He asked ____any elephants in the zoo the day before.
A,if did you see B,if you had seen
C,whether did you see D,that you had seen
A brilliant idea____to me that I could make a Christmas present for my mother.
A,struck B, happened C, worked D，occurred
.A fire broke out in a neighbouring street yesterday,but it was soon_______by the firemen.
A,gone out B, put out C,given out D,made out
The house caught___fire last night but no one knows who set ___fire to it.
A. X；X B.X;a C, a; a D, a; X
The humans are destroying nature day by day,__________of course,will cause severe punishment from it sooner or later.
| A．who | B．when |
C．on which | D．Which |