题目

All the kids couldn’t helpup when they heard the exciting news.A. jump B. to jump C. jumping D. jumped 答案：【答案】C【解析】试题分析：句意：当他们听到这令人激动的消息的时候，所有的孩子禁不住跳起来。根据句意及题干分析“禁不住做某事”是can’t help doing sth.，故选C。 —Is this your baseball, David?   —No, it's not     . It's Helen's. A. his        B. yours    C. mine     D. hers