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
When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
#93492
A
that
B
it
C
this
D
what
Peter has been busy these days and seldom ____ to come over to have a chat with me.
#93841
A
does he have time
B
he has time
C
doesn’t he have time
D
he hasn’t time
What you said just now has ______ the matter we are discussing. Let’s come to the point.
#94902
A
something to do about
B
nothing to do about
C
something to do with
D
nothing to do with
As far as I see, ________ is no possibility ________ he will win the tennis match this time.
#93736
A
it; that
B
there; that
C
it; whether
D
there; whether
John said he had been working in the office for an hour, _______ was true.
#94927
A
he
B
this
C
which
D
who