问题

To protect the environment, many firms in downtown New York encourage their employees to use ____means of transportation, rather than the car.

A:primitive
B:alternative
C:reliable
D:adequate

正确答案是：

同类题型

Zhang Hua is clever and works hard at his lessons __________

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eople have been ill from a strange disease thesedays, _____ we’ve never heard of before

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