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單項選擇題

I have received （） professional training.

A.three-month
B.three-months
C.athree-month
D.three-month’s

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單項選擇題

I think your sister is old enough to know （） to spend all her money on fancy goods.

A.better than
B.than
C.other than
D.rather than

單項選擇題

In addition to setting the price of a product, business firms must decide （） to offer special discount and credit terms to their customers.

A.if
B.which
C.whatever
D.whether