1 . It is ________ the fish can survive out of water for months ________ makes them the coolest.

A．where… that

B．when… that

C．that… that

D．what… that

2 . ______ gets home first is to cook supper for our big family.

A．Who

B．Whoever

C．Whom

D．Those who

3 . —What has made her look so sleepy?
—________ she has to get up several times a night to attend to her mother because she is ill.

A．That

B．What

C．Why

D．Where

4 . It is still a mystery ______ caused the infectious virus to spread quickly in this hospital.

A．which

B．where

C．what

D．that

5 . It’s ______ is written on the signs inside the bus ______ has people talking.

A．that; what

B．that; that

C．what; what

D．what; that

6 . It is a pity ________ I can’t afford this cool car.

A．how

B．what

C．that

D．which

7 .        is a fact        smoking is a danger to our health.

A．What; that

B．It; that

C．What; which

D．It; which

8 .         made my sister angry yesterday was that her new mobile phone was stolen.

A．What

B．That

C．It

D．Who

9 . He believed that every individual was equal and independent, and it didn’t matter          others treat him.

A．how

B．what

C．which

D．that

10 . As the name yuanxiao or tangyuan implies,          the dumpling balls symbolize is family unity.

A．which

B．what

C．and

D．why