—Why did you plant so many trees? — ______ the environment.
#49943
A
Improve
B
To Improve
C
Improved
D
Improving
推荐题目
I hope everyone can care about ______ the environment and stop ______ things.
#49218
A
protecting; wasting
B
protecting; to waste
C
protect; wasting
D
protect; to waste
Guo Degang is a famous crosstalk performer. He always makes people __________.
#48540
A
laughs
B
laugh
C
laughing
D
to laugh
The boy isn’t old enough ________ with the difficult problem by himself.
#50365
A
deal
B
deals
C
dealing
D
to deal
I’m too busy _______ my homework _______ walk my dog every day.
#51203
A
to do; to
B
doing; to
C
to do; /
D
doing; /