I went to shanghai last week,      I visited the World Expo.
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A
When
B
Where
C
Which
D
that
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I have bought two ball pens, _____ writes well.
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A
none of them
B
neither of them
C
none of which
D
neither of which
____is well known, Taiwan is part of China.
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A
As
B
That
C
Which
D
It