Some scientists believe that ________ is no doubt ________ a cure for AIDS will be found.
| A．it; that | B．it; whether |
| C．there; that | D．there; whether |
-----Shall I give you a ride as you live so far away？
------- Thank you． ____________．
| A．Of course you can | B．If you like |
| C．It couldn’t be better | D．It’s up to you |
What if we meet a situation ______ we won’t be able to deal with?
| A．where | B．in which | C．when | D．that |
The country life he was used to ____ greatly in the past decade．
| A．change | B．has changed | C．changing | D．have changed |
Although the wind has ____, the rain remains steady, so you still need a raincoat．
| A．turned up | B．gone back | C．died down | D．blown out |
Don't leave the water ____ while you brush your teeth．
| A．run | B．running | C．being run | D．to run |