北大清理低端学生:帮忙解答一个英语问题

来源:百度文库 编辑:高考问答 时间:2024/05/16 05:29:14
Look,the gril____(ride)bikes on the stage

is riding.

正在进行时, 前面有look做提示语.

is riding

is riding

is riding

is riding
LOOK,一般是现在进行时的标志