—Why did you plant so many trees? — ______ the environment.
#49943
A
Improve
B
To Improve
C
Improved
D
Improving
推荐题目
— I tried it out in this way, but I failed.— Why not it in some other ways?
#50281
A
to work; try doing
B
to work; try to do
C
working; try to do
D
to work; to try doing
You need to take notes at the meeting so make sure _________ a pen and some paper with you.
#50455
A
bring
B
bringing
C
to bring
D
not bring
That little boy doesn't feel like _____ out today, _______ her sister would like to go shopping.
#50379
A
going, and
B
to go, and
C
going, but
D
to go, but
