Scientists are working hard to make _______ possible for people to live on Mars in the future.
#55873
A
it
B
that
C
this
D
one
推荐题目
I don’t want to buy this pair of black shoes. I want to buy ________.
#55912
A
that one
B
that pair
C
that ones
D
that a pair
I think____________ necessary _____________ to take more exercise.
#55774
A
it, for Jim and me
B
it’s, to Jim and me
C
that , for Jim and I
D
that’s, to Jim and me
I don’t make ________ clear when and where the parents’ meeting will be held.
#55812
A
this
B
that
C
those
D
it
— Jim, do you have a CD? —Yes, I have _____. And I bought _____last Sunday.
#55782
A
one, it
B
it, one
C
it, that
D
one, this
---Dear me! What a beautiful computer!---My grandma bought ___for my sister and me. It’s ours.
#55779
A
them
B
it
C
a
D
one