1 . 【2018·北京】_________ we don’t stop climate change, many animals and plants in the world will be gone.

A．Although	B．While
C．If	D．Until

2 . I first met my new teacher in the park, _________ was located by the sea.

A．which

B．that

C．where

D．who

3 . You should try to get a good night’s sleep ______ much work you have to do.

A．however	B．no matter
C．although	D．whatever

4 . Do you know _________ Joseph left so early?

A．what

B．when

C．where

D．why

5 . Convenient________they are, these apps present problems to both parents and teachers. （用适当的词填空）

7 . The song “In Spring”___ original singer is Wang Feng has brought national fame to Xuriyanggang, ____won the second place in the 2010 Avenue of Stars Finals.

A．who; whose

B．which; who

C．whose; who

D．of whom; who

8 . The old man asked Lucy to move to another chair__________he wanted to sit next to his wife.

A．although

B．unless

C．because

D．if

9 . ________(既然) he has graduated from university, he should learn to earn his living. （根据汉语提示完成句子）

10 . You are saying that everyone should be equal, and this is _______________ I disagree.

A．why	B．where
C．what	D．how