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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
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The apples on this tree are bigger than        on that one.
#55840
A
ones
B
those
C
them
D
apples
 ---Tony, ________ is my good friend, Harry.--- Hello, Harry.
#55863
A
this
B
that
C
it
D
he
Is this your father? No, ________.
#55854
A
it is
B
it isn’t
C
he is
D
he isn’t
        of four buses will take you to the station . We can take        of them .
#55762
A
Any ; every
B
None ; any
C
All ; any
D
Neither ; none
I forgot to bring my pen, would you please lend ________ to me?
#55744
A
one
B
that
C
it
D
this