our earth, or else it will be no longer fit for us to live on.
#65875
A
Protected
B
To protect
C
Protecting
D
Protect
推荐题目
——Don’t eat in class, Hu Lei! ——_______, Miss Zhang.
#59370
A
Excuse me
B
Sorry, I won’t
C
No problem
D
Not at all
You will find what great benefit the computer you own can be _____ each time you use it to help you work.
#66007
A
for
B
at
C
of
D
on
great progress it has made since Hong Kong returned to China in 1997.
#65921
A
Which
B
What
C
How
D
Whether