lgzh920
幼苗
共回答了14个问题采纳率:92.9% 举报
1This thing must be done by you as soon as possible.
2The children must be taken good care of bu us.
3Student's time must be made good use of by them in class
注意:情态动词后面加的是动词的原型.因此,must后面加的是be,而不是been,been是be的过去分词.
希望对你有用!
1年前
3