can those at the back of the classroom hear me A seat B sit C seated D sat 应该选择哪个?能给出个理由吗?英语略差.

can those （seat） at the back ofcan those （seat） at the back of the classroom hear.no problem. Can those (sitting) at the back of the classroom hear me? Can those （）at the back of the classroom hear me?A seat Bsit Cseated Dsat at the sight of those books,the children can't wait to read those have a gong time at the party 同义句can you tell me ? Only those who are good at savoring can get the true flavor of lifeplease translate can i (look) at those pictures on the wall do you (know) the boy in the picture 括号里填啥啊 her foot wounded so much：是完整的句子吗?can those at the back of the classroom hear me? Can those ________ at the back of the classroom hear me?此处为什么填seated,而不填seating At night,I am those stars in the sky,and you can see them whenever you lift your head. The feelings of those who can not Can those ___at the back of the classroom hear me?A seat B sit C seated D sat为什么不能选B?我的理解是改写成：Can those who sit at the back of the classroom hear me? Can those ____ at the back of the classroom hear me?A.seat B.sit C.seated D.sat具体点 The students at present are h__than those in the past knowing those tests are looming at once can be pretty stressfull looming at 改错：Those have questions can ask the teachers for advice. Can you see those w____ on the blackboard? those signs can help you find the eait_____(easy)