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
--How much ________the red socks? --________6 dollars.
#55799
A
is; It’s
B
are; They’re
C
is; They’re
D
are; It’s
If you don’t know how to use the word, you should _________ in a dictionary.
#55810
A
look up it
B
look it up
C
look them up
D
look up them
—A latest English newspaper, please! —Only one copy left. Would you like to have , sir?
#55760
A
one
B
this
C
that
D
it