our earth, or else it will be no longer fit for us to live on.
#92853
A
Protect
B
To protect
C
Protecting
D
Protected
推荐题目
The new building is _______ the old one.
#92348
A
four times larger of
B
four times large than
C
four times as larger as
D
four times the size of
_____when she started complaining.
#93158
A
Scarcely did he arrive
B
Hardly had he arrived
C
No sooner had he arrived
D
Not until he arrived