单项选择题

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

A.appoint，make
B.want，make
C.need，make
D.need，do

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单项选择题

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

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

单项选择题

After inspection of the above shipment we found 5 cases（）.

A.losing
B.missing
C.lost
D.missed

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