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
On turning on the computer, .
#93452
A
Mum told me to have supper.
B
a game appeared on the screen.
C
there was something wrong with the mouse
D
I found a strange E-mail.
Don’t be discouraged. ______ things as they are and you will enjoy every day of your life.
#92783
A
Taking
B
To take
C
Take
D
Taken
-You look upset. -Yes, this is the first time I________ form home.
#92607
A
leave
B
left
C
have been away
D
is away
_____ I believe，and you will find him very capable．
#91991
A
Having a talk with Tom
B
Given a talk with Tom
C
One more talk with Tom
D
If you have a talk with Tom
________ has already been pointed out, only by correcting mistakes can you make progress.
#92597
A
It
B
As
C
That
D
What