31. All his attention______on the computer game, so he even didn't notice his mother enter the room.
| A．has been fixed | B．was fixing | C．was fixed | D．Fixed |
--Would you please explain to me about the difference between the two phenomenon?
--I’m sorry, but that’s just _____ I’m puzzled about.
| A．why | B．what | C．which | D．where |
The boy can speak English _____ his elder brother, but his written work is just_____ excellent.
| A．as good as, than | B．as easy as, than | C．as well as, as | D．as fluent as, as |
May 12th，2008 is a special day, _____, I think，that will be remembered by the Chinese
forever.
| A．one | B．it | C．which | D．that |
It’s a common sense _____ Canberra, _____ between Sydney and Melbourne, is the capital of Australia.
| A．that; locating | B．that; located | C．which; located | D．as; locates |
– I wonder how much you charge for your services.
-- The first two are free________the third costs $30.
| A．though | B．until | C．while | D．before |