计算机网络具有数据传送、资源共享、提高网络系统的可靠性和（）的功能。

阅读短文，从方框中选出适当的单词填空

getting    helpful     see    to get    much

Dear Ricky,
How are you 1_______________ on? Thanks very much for sending me the pictures and the English reading materials. From the pictures I can 2_______________that your school looks very beautiful. The reading materials are very useful and 3_______________. I can learn a lot from them.  Some stories are so interesting that I like them very much.
Now I don’t have 4_______________ time for my hobbies. I am busy getting ready for the coming exams. I’m working hard at all my lessons because I want 5 _______________ a better result.
I’m looking forward to hearing from you soon.
Yours,
Wu Ming