单项选择题

This container can be easily opened（）both ends.

A.on
B.at
C.in
D.by

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单项选择题

Forwarding agent services are valuable in foreign trade because of the complicated（）that have to be made.

A.arrangements
B.formalities
C.procedures
D.process

单项选择题

That trading company in Tokyo did consider（）the transaction with you.

A.concluding
B.toconclude
C.conclude
D.conclusion

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