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 E-mail Jack had looked forward to ______ last night at last and he was very happy.
#92912
A
arrived
B
arriving
C
had arrived
D
arrived
_____ is little doubt that the Chinese women basketball team will beat the Japanese team.
#94838
A
It
B
That
C
There
D
Which
More wild tigers have been seen in the forest around this area, ________ there used to be very few.
#93739
A
when
B
where
C
what
D
which
It’ll be only a few days ______ the Spring Festival comes round.
#91973
A
after
B
since
C
before
D
when
Jack is a great talker.It's high time that he ________ something instead of just talking.(2012·辽宁)
#91917
A
will do
B
has done
C
do
D
did