1 . I committed myself__________ studying hard this year.

A．by

B．in

C．to

D．from

2 . Personally, I have__________ technological advances.

A．got stuck

B．summed up

C．died from

D．benefited from

3 . In addition, your smart home__________ your health for you every day in the future.

A．will be monitoring

B．monitored

C．be monitoring

D．to monitor

4 . —You looked tired. What’s the matter?
—I ______ last night to watch a football match.

A．put up

B．picked up

C．broke up

D．stayed up

5 . There’s no need ______. We have got plenty of time.

A．to hurry

B．hurrying

C．to be hurried

D．being hurried

6 . Mary likes bananas, ________ she doesn’t like pears.

A．and

B．but

C．so

D．or

7 . —Who’s ________ man in a blue T-shirt?
—He’s my chemistry teacher, Mr. Brown.

A．a

B．the

C．an

D．/

8 . Learning English is quite like walking in a long journey _________ sweat, diligence and hard work are needed.

A．which

B．that

C．where

D．whose

9 . With the ________ of sea water becoming increasingly high, scientists feel obliged to do a full-length analysis about the reason.

A．registration

B．concentration

C．impression

D．revision

10 . Many old people hold a mistaken belief that the snake is ________, but it turns out that it tends to be dangerous.

A．frightening

B．awkward

C．harmless

D．curious