英语问题,快!下列的句子中的前置词用得正确与否?1.The students complained about thei

英语问题,快!
下列的句子中的前置词用得正确与否?
1.The students complained about their teacher that they didn't have enough time to finish the work.
2.Language learners can learn more on vocabulary by reading newspapers and magazines.
3.The student asked the teacher about the difference of adjectives and adverbs.
4.The student had a meeting to discuss about the problem of discipline in the classroom.
5.Many students do not pay enough attention on their splling.
6.The students asked another two days to do their homework.
7.When they left school,the students had to spend a long time seaching a job.
8.The teacher was stuck in the lift.so the class had to wait him for almost half an how.
9.The teacher was always complineing the quality of the students'work.
10.The teacher asked for the students to pass their work to the front of the classroom.