英语.用适当词填空.1.Should teenagers ________ allowed to do homework

英语.用适当词填空.
1.Should teenagers ________ allowed to do homework _________groups?
2.He should stop ________that silly earring.
3.She has to clean _________ her bedroom every morning.
4.I am worried that I might ________ the math test.
5.I think we teenagers should ________ our own clothes to wear to school.
6.You should concentrate more _________your study than other things.
7.I would like to reply _________ the article "Helping and Learning"in your last newsletter.
8.I agree with some students and disagree _________others.