1 . When Tom _____ at the past three years, many beautiful memories rush to his mind.

A．looks through

B．looks after

C．looks back

D．looks up

2 . 我回头，看到了妈妈站在雨里。
I ________________________ and saw my mum standing in the rain.

3 . I was ________ one of the wonders of the natural world—the Grand Canyon.

A．looking to

B．looking across

C．looking after

D．looking back

4 . —Can you ________ your little brother for a short time? He is ill today.
—OK, Mum.

A．look at

B．look after

C．look like

D．look back

5 . The Chang’e 5 lunar probe(月球探测器) ________ rocks and soil from the moon on December 17, 2020.

A．called up

B．came back

C．brought back

D．looked back at

7 . 他的爷爷总是回顾过去。
His grandpa always ________ at the past.

8 . School requires us to __________ all the books to the library by the end of this term.

A．look back

B．talk back

C．come back

D．bring back

9 . — Mum, I miss my dad very much. When will he return from Shenzhen?
— He says he’ll go home by plane tomorrow afternoon. You’ll see him soon.

A．walk back

B．come back

C．look back

10 . Look out! There are so many cars running on the road.

A．Look outside!	B．Look around!
C．Be careful!	D．Look back!