用 1.be concerned about 2.should have done 3.calm down 4.series of 5.igone
问题描述：
用 1.be concerned about 2.should have done 3.calm down 4.series of 5.igone
5个词组造5个句子
答
They were very concerned about the girl's safety.他们十分担心那个女孩的安全.You should have finished all your homework.你本应该完成了你所有的作业.Take a few deep breaths to calm yourself down.做几次深...