1：I hope this information has some value to you.
2：People under the age of 18 are not allowed to enter the Internet bar.
3：I can hardly understand what he said
4：His suggestion is worth to adopt?
5：You have no other choice but to finish the homework on time.
6：As the students to hand in their homework on time is a must
7：How to deal with the water pollution is still a big problem