英语改成肯定否定回答sam this morning in the classroom

英语改成肯定否定回答sam this morning in the classroom They are singing in the classroom怎样改成否定句、一般疑问句、肯定回答、否定回答、对ar the students are cleaning the classroom.（改成一般疑问句并做肯定和否定回答） Are the middle school students in the classroom ?的肯定回答和否定回答 Does breakfast start at 7:30 in the morning?做肯定回答和否定回答 We are in the classroom变一般疑问句 并作肯定和否定回答 把was she in the hospital改成肯定回答和否定回答 We played hide-and-seek in the morning.(否定句,一般疑问句,肯定回答) There were some birds in the tree this morning.（改成否定句） Is this your mother in the picture?和Is this LiPing?肯定或否定回答 there is a small window in the bed改成一般疑问句,做否定和肯定回答. 把Must we clean the classroom now?改成否定回答