选词填空。
A.with B. on C. at D. for E. in
1.Don’t sleep _________ class. (______)
2.Yesterday I had fun _________ my friends. (______)
3.I can look it up _________ the Internet. (______)
4.Amy bought some nice gifts _________ her family. (______)
5.They are going to meet _________ the school gate. (______)