( ) 30 ---Where’s Mary?I can’t find her.--- She _______ at the pool.A.swimming B.is swimming C.swim D.swims 选什么？为什么？

分类: 作业答案 • 2022-07-06 09:45:24

问题描述：

( ) 30 ---Where’s Mary?I can’t find her.--- She _______ at the pool.A.swimming
B.is swimming C.swim D.swims 选什么？为什么？

答