1 . On the wall________a noticeboard that says, “Please keep a two-meter distance from each other when you are lining up for the nucleic-acid test”.

A．hangs

B．is hanged

C．hanging

D．is hung

2 . Not until ________, ________ the camp site.

A．the sun went down; they reached	B．did the sun go down; they reached
C．the sun went down; did they reach	D．did the sun go down; did they reach

3 . Scarcely _________ since we parted.

A．an hour has passed

B．has passed an hour

C．has an hour passed

D．an hour passed

4 . In our campus         , which was built many years ago.

A．a building stands

B．a building lies

C．stands a building

D．lies a building

5 . Gone ______ the days ______ we sang and danced happily.

A．have; when

B．were; which

C．are; when

D．are; that

6 . Barely ________settled down in Beijing when he was tasked ________over the company in Shanghai, whose CEO was diagnosed with cancer two weeks ago.

A．he had ; to take	B．had he ; with taking
C．had he; to take	D．he had; with taking

7 . _____ beneath the ground here _____ an estimated 40 million tons of copper and 100 million ounces of gold.

A．Being buried ... is	B．Being buried ... are
C．Buried ... is	D．Buried . . . are

8 . To such an extent _____ around the neighborhood that residents were afraid to go out.

A．did infection increase	B．increased infection
C．infection was increased	D．infection increased

9 . On the other side of the road _____, more than 20 storeys high, waiting for their first residents.

A．stand new blocks of flat	B．new blocks of flats stand
C．standing new blocks of flat	D．do new blocks of flats stand

10 . Man may disappear________ other creatures who became too specialized to survive their environment.

A．as

B．just as

C．as if

D．as have