单项选择题

I thought you might be tired, （） is why I decided to help you.

A．that
B．this
C．which
D．as
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单项选择题
All of them are （） at Lana s achievement.
A．amazed
B．interested
C．fond
D．proud
单项选择题
No agreement was （） in the discussion as neither side would give way to the other.
A．arrived
B．obtained
C．reached
D．gained
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