what should I reply when someone say "what's up" to me ? In fact I am not sure what this line means--"whay's up"

Here is snowing ,where are you It snowed yesterday in my hometown.And it is the first snow in this winter. We think the first snow is very romantic ,even it is so cold after that . The family go outside for a walk . Children play with snow and make a snowman. The city is totally covered by snow and become truewhite. The photos were taken by my friend who is so lucky working in my hometown now. And he gave a SAD title to these photos --"Here is snowing ,where are you ". (Thank you so much to Anna for editing the photos .)

I am not alone Happy time always goes so fast.Anna came and gone. But we really had a wonderful vocation together. I feel so lonely after my friend leaving .And I miss my parents so much. Some firends asked me to go back to my hometown,I really want to do that,but how can I give up my dream. Sometimes I feel lonely but I know I am not alone . Even my family and friends are not with me ,I still can feel their love ,bcz my heart is with them.

Anna is coming Anna will come this Friday.It is really a exciting news to me. We have not seen each other for about two months.Maybe it is not too long ,but I miss her too much. We are friends but really like twins ,we know each other so well . Bcz her coming I have to do some housework to make my room nice ,and buy some food which she likes.We plan to go to the park which is very famous in my city,and we will go to the beach. And of course we will do shopping ,it is our favorite. Now I am looking forward her coming.

a short leave Hi my dear friends ~I will leave for some days bcz of my parents visit. You all take care and have good good days. If you miss me ,you can leave messages to me .I will be happy to see your messages when I come back. See you my dear firends .

what is the difference between "joke" and "kid" ,and how to use them?

What is the diffirence between "person" and " people"?

Which is correct: He is online.He onlines.

Do you know what does the word-- "green room" mean?