What is the best way you think of ______ the environment?
#51117
A
to protect
B
protecting
C
protect
D
protected
推荐题目
Tina used to______ village, but now she’s used to______ in the city.
#49813
A
live, live
B
live, living
C
living, live
D
living, living
—Would you mind ____ the room? —OK. I’ll do it right away.
#50211
A
clean
B
cleaning
C
cleaned
D
to clean
I often see my mother ____________ chess with my father after supper.
#51021
A
to play
B
played
C
playing
D
play
