The missing boys were last seen______near the river.A、playingB、to be playingC、

游客2024-01-16  18

问题 The missing boys were last seen______near the river.

选项 A、playing
B、to be playing
C、play
D、to play

答案 A

解析 本题考查分词用法。现在分词作主语补足语,表示动作正在进行。
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