look!there is a girl .on the playground A runs B running C to run_英语解答

look!there is a girl .on the playground A runs B running C to run D is running
选什么为嘛选这个

人气：112 ℃　时间：2019-10-19 06:57:43

解答

B
there is sb doing sth.
有……在做某事