Now more and more people prefer_ _to_ _in order to reduce the air pollution.
| A．to walk; driving | B．walking; drive |
| C．walking; driving | D．to walk; drive |
My mother isn’t in, I must ___ my sister at home.
A. look at B. look after C. look up
I love junk food, too, ____ I try to ____ only once a week.
A. but, eat
B. but, eat them
C.but, eat it
I do homework every day when I come ____ home ____ school.
A. to, from B. at, for C. /, from
Li Lei likes _______ a red hat.
A. putting on
B. to put on
C. wearing
Some of us watch TV three ____ four _____a week.
A. and, time B. but, time C. or, times