单项选择题

He was only an office boy before()the position.

A.being appointed
B.appointed
C.appointing
D.having appointed

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单项选择题
She was so interested in the book that she()it for three hours before she realized it.

A.read
B.would have read
C.was reading
D.had read
单项选择题
() whales can weigh 40 tons and reach lengths of 50 feet.

A.Fully grown
B.Full grown
C.Grown fully
D.Growing fully
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