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
All of you, yourself, and we’ll begin our class soon.
#65987
A
are seating
B
will seat
C
have seated
D
seat
The smoggy weather has made us realize terrible problems we are laced with．
#66025
A
how
B
what
C
that
D
which
______ some housework can make your mother_______.
#59454
A
Doing; happy
B
Making ; happy
C
Doing; happily
D
Making ; happily
For further details about our newly developed products ________ our company's website.
#65901
A
visiting
B
visit
C
to visit
D
visited