1 . It is Qatar ________ will hold the 2022 World Cup.

A．that

B．which

C．where

D．when

2 . -Did you meet with your head teacher in the concert last night？
-Yes. It was in the interval___________ we met.

A．what

B．that

C．where

D．when

3 . It was ________ I missed the early bus ________ I was late for school.

A．why；that

B．because；that

C．why；because

D．because；why

4 . It is through years of research ________ scientists have discovered the relationship between social media addiction and depression.

A．since

B．before

C．that

D．when

5 . —________ makes your son feel depressed recently?
—Being rejected by all the universities he has applied to.

A．What it is that	B．How is it that
C．What is it that	D．How it is that

6 . It is eating too much junk food ______ makes him overweight.

A．which

B．what

C．/

D．that

7 . --What impresses you most when you visit the Acropolis?
-- ________ it is that has brought the grand palace into today’s terrible scene.

A．Where	B．What
C．How	D．When

8 . It was the girls _____ saw the old man in the morning _____ he was taking a walk.

A．who, that

B．who, when

C．that, who

D．that, that

9 . He ________ go to the airport yesterday. But he didn’t find you.

A．does

B．did

C．has to

D．had to

10 . It was not until I suffered hair loss ________I realized the harm of staying up late.

A．when	B．that
C．which	D．what