如题all the students这里的all是什么词,作什么成分还有 They were both waiting

They all went there和 They were all waiting outside the gate They were both waiting outside the gate they are ------ students 空里用all 还both All the students were here yesterday.的同义句 all the students were very sxcited的肯/否 They were all excited and happy．中were充当的成分以及作用?拜托了! 这里需要冠词the Not all studentsNot all of the students.应该都是可以的.这个 All the teachers and students were tired when they ___the to They were all （ ）at the ( ) news They were all late for the meeting They were all ___at the ___news The students and I are ___(both all) good friend