Kitty found _________ interesting _____________ the difference between the twins.
#54347
A
/, to learn
B
it, learning
C
it, to learn
D
/, learning
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All of us found ________ hard to get along with him, he was too strict with others but not with himself.
#53697
A
this
B
that
C
it
D
it’s
Stephen Hawking thinks _______ important to have hope in bad situation.
#37275
A
it
B
that
C
this
D
its
We carefully compared the result of the first experiment with_______ of the second one.
#52739
A
it
B
that
C
the ones
D
this