单项选择题

I （）when Billy called me so late at night.

A.have surprised
B.am surprised
C.was surprised

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单项选择题

I couldn't hear anything because there was （）much noise.

A.so
B.such
C.enough

单项选择题

-- Would you like another cup of coffee-- （）

A.No, thanks
B.Never mind
C.You're welcome

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