Jim's sister was badly ill, so he had to ________ his home at once.

A. arrive in

B. set off

C. leave for

D. go back

I didn't go to the park with my classmates, because my mother asked me to ________ my little sister at home.

A. look after

B. look at

C. look for

D. look like

________ the Great Green Wall, the land produces more crops.

A. Thanks for

B. Thanks to

C. Thank to

D. Thank for

桽hall we call for a taxi？

桹K. Let me ________ the phone number in Yellow Pages.

A. look at

B. look for

C. look up

D. look after

梂ould you mind ________ my pet dog while I'm away？

桽ure, no problem.

A. setting up

B. looking after

C. turning down

D. keeping out

When he ________ home, he saw his mother cleaning the room.

A. got up

B. got back

C. got off

D. got on

With the medicine box, Miss Zhao ________ to look after the man.

A. sent away

B. hurried off

C. fell off

D. rang up

When Isaac Newton saw an apple ________ an apple tree, he asked himself"why" ．

A. fall down

B. fall off

C. fell down

D. falling off

You may ________ and then decide if you'll buy it.

A. try on it

B. try out it

C. try it on

D. try it out

I often ________ much time ________ English.

A. take; to

B. pay; for

C. spend; on

D. cost; /