早教吧 育儿知识 作业答案 考试题库 百科 知识分享

she(sing)inthemusicroomforanhoshe(sing)inthemusicroomforanhour.

题目详情
she_____ ______(sing)in the music room for an ho
she_____ ______(sing)in the music room for an hour.
▼优质解答
答案和解析
She has sung in the music room for an hour.
因为后面有for an hour,说明已经在进行,而且还没有完成的,现在进行时.