are they { }their homework?

are they { }their homework? They are doing their homework?对doing their They never do their homework,they are going to_____ They are not ( ) while they do their homework. they finished their homework they are doing their _____(homework) in the classroom They are doing their homework carefully.you'd better not---- They are writing their homework 哪儿错了? They are't do their homework in the evening.(改错) .They______TV in the evening.They do their homework. (A)are They are doing their homework.(变成否定句) They are doing their homework now.变成一般现在时和一般将来时