The air _____only 240 kilometers away from the earth.A.wasB.areC.travelsD.reaches

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The air _____only 240 kilometers away from the earth.A.wasB.areC.travelsD.reaches

The air _____only 240 kilometers away from the earth.A.wasB.areC.travelsD.reaches
The air _____only 240 kilometers away from the earth.
A.was
B.are
C.travels
D.reaches

The air _____only 240 kilometers away from the earth.A.wasB.areC.travelsD.reaches
我觉得是C
B,D可以排除