求一句英语句型the students were busy with their homework when the t

求一句英语句型the students were busy with their homework when the t The students were busy doing their homework,only____ once in The students were busy doing their()when the teacher entered The students are busy with their homework 同义句转换 the students are busy （）their homework THE STUDENTS ARE BUSY WITH THEIR HOMEWORK ALL THE TIME同义句. The students are busy with their homework all the time.(同义句) The students _____ their homework when the teacher came The students were reviewing their lessons when the teacher c When the students finish _______ their homework,they went on The students were listening to the teacher,with their eyes__ 【高一英语】The students were listening to the teacher,with their