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單項(xiàng)選擇題

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

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

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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

單項(xiàng)選擇題

I forgot （）an umbrella with me when I left home for work.

A.take
B.to take
C.taking
D.took