1 . Communication technology has entered the 5G era,________will surely bring great changes to our life.

A．when

B．what

C．which

D．where

2 . ________her mother________she ran to her.

A．Hardly had the girl seen; when	B．Hardly the girl had seen; when
C．The girl had hardly seen; than	D．The girl had hardly seen; as

3 . The only thing________can be done is to stop them from going there.

A．that

B．which

C．what

D．who

4 . Laughter is the best medicine, _________ means keeping a good mood is helpful to our health.

A．what

B．which

C．that

D．it

5 . Jack wanted to learn to play the piano by        after a live concert.

A．him

B．his

C．he

D．himself

6 . Look! The girl          on the stage is my cousin, Lily.

A．singing

B．sung

C．sing

D．sings

7 . This pen is a birthday present that Father gave me. I hate to have to part with it___________ it is old.

A．even though

B．as soon as

C．as long as

D．now that

8 . You’ll never speak English well________you often practice it.

A．unless

B．if

C．or

D．otherwise

9 . Let’s set out right now,        we will be late for our flight.

A．and

B．or

C．but

D．so

10 . He is ______ in painting so much and his dream is ______ an extraordinary artist.

A．interested; to become	B．interesting; to become
C．interested; becoming	D．interesting; becoming