when he was [ ] he went down to the small riverA.busyB.freeC.ill_英语解答

when he was [ ] he went down to the small river
A.busy
B.free
C.ill

人气：284 ℃　时间：2019-11-12 03:31:40

解答

答案是B
你要根据上下文来看：free在这里表示“空闲”
整句话的意思是：他空闲的话,才可以去河边玩