Only when possible to settle the problem.
| A．our teacher comes will it be |
| B．does our teacher comes will it be |
| C．our teacher comes it will be |
| D．has our teacher come will it be |
Asia has achieved more in controlling the bird flu than Europe in the past few years, _______ the number of people infected with the virus is going up sharply.
| A．when | B．that | C．so that | D．where |
He does so little work in the office that for all practical purposes it would make no difference _______ he didn’t come.
| A．if | B．when | C．why | D．whether |
— May I go and play with Dick this afternoon, Mum?
No, you can’t go out _______ your work is being done.
| A．before | B．until | C．as | D．the moment |
— What should I wear to attend his wedding party?
— Dress _______ you like.
| A．what | B．however | C．whatever | D．how |
_____ different life today is from _______ it was thirty years ago.
| A．What; what | B．What a ; what | C．What a; how | D．How; what |