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單項(xiàng)選擇題

He was asked to speak louder（）all the students in the classroom could hear him.

A.as
B.so as to
C.so that
D.than

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It（）exactly thirty years since I graduated from college.

A.was
B.has been
C.was be
D.had been

單項(xiàng)選擇題

To be frank, （）is a great joy for me to win the prize.

A.this
B.that
C.it
D.there

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