when you take

when you take ---walk in any of the cities in the west,you often see a lot of people walking--dogs.
A a; the B.the ;the C.a ,不填 d.不填；不填

选C take a walk 是固定短语,散步,而第二个空意为遛狗,遛狗可以用walk a dog; walk the dog; walk dogs

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