1 . After graduation, Hawking first went to Oxford University ________ he studied physics, and then he furthered his study in Cambridge University.(用适当的词填空)

2 . Scientists are investigating the issue of animal population losses in some regions         this has happened.

A．that

B．where

C．how

D．why

3 . 在很多可以种植庄稼的地方，人们正在破坏自然环境。(定语从句) （汉译英）

4 . Basketball is a sport ________ players from both sides stay on the court for over 40 minutes. (用适当的词填空)

5 . The apartment ________ we have lived for a decade will be sold to James for $ 80,000.

A．which

B．in that

C．that

D．where

6 . Learning is a process ______ we adapt ourselves to our surroundings.

A．when

B．how

C．that

D．where