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單項選擇題

No discount will be granted（）you place an order for more than 1000 dozen.

A.if
B.unless
C.whether
D.butfor

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單項選擇題

When yon（）an agent, it is usual to（）the appointment in writing.

A．a(chǎn)ppoint，make
B．want，make
C．need，make
D．need，do

單項選擇題

For（）commodities as oil, sand and timber, rail is cheaper than road.

A.unpacked
B.unpackaged
C.bulk
D.bundled

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