some students are indulged in these activities,totally neglecting their studies.后面为什么加ing

Some students are in the room.(对划线部分提问）划线部分是Some students there are some students in the hall(划线提问 一般疑问句 否定回答)some students 划线 Some students are in the playground.Some are in the school()(图书馆） There are some students in the classroom,______反义疑问句 改为否定句 There are some students in the classroom. There are some students in the ciassroom ,（ ）（ (反义疑问句) are there some students in the classroom找错误改正 There are some students in the classroom (改为否定句) There are some students in the classroom.否定句 1 ( )1.There are students in the classroom.A.some some students are in the classroom 改否定句 Are there some students in the library?哪里错了? There are some students in the canteen.{否定句 Some boy students are in the classroom改为同义句 There are 50 students in my class .Some are sleeping .The others are readingThere are 50 students in my class .Some students are sleeping .The other students are reading.哪一句对 Some students are in the singing group .____(other)are in the drawing grouo. some studengts are in the classroom.变为同义句------ ------students are in t There are some students in the office.中对some student提问怎么提