Could it be in the room _________ we had a talk last night ___________ you left your keys ?
| A．that; where | B．in which; where | C．where ; that | D．where ; where  |
For holidays, many people visit the Great Barrier Reef _____ the northeast coast of Australia, which has 700 islands.
| A．on | B．in | C．to | D．off |
Although Tom agreed with her on most points, here was one _____ which he was unwilling to give in.
| A．on | B．in | C．to | D．with |
Heilongjiang Province is _____ north of Liaoning. Harbin, its capital city, lies _____ the Songhuajiang River.
| A．to; on | B．in the; in | C．不填; on | D．to the; in |
I don't remember___________ to the airport that year.
| A．to be taken | B．being taken | C．having | D．to take |
A man does not know the difficulty of anything_________ he does it personally.
| A．although | B．if | C．because | D．Unless |