Question

【题目】—What is happening outside the window？

—There must be some children ______ games.

A. to play B. plays

C. playing D. is playing

Answer 1

【答案】C

【解析】句意：--- 在窗外正在发生什么事情？--- 一定有一些孩子们正在玩游戏。根据句意，结合用固定句式：There must be sb.doing sth.意为“一定有某人在做某事”。故答案为：C。