To construct a question involving the word "which", you must ask what one (or more) of many is the thing you are asking about.
For example:
Which of those books are from the library?
Or: which of these examples do you understand?
Look, read and choose.
1) There is a sofa in front of the window.
2) There are two cats on the sofa.
3) There are some books next to the sofa.
4) There are some some glasses in the cupboard.
5) There is a ball under the cupboard.
6) There is a lamp behind the books.
I'm going to feed my dog.
My dog isn't going to eat vegetables.
Are you going to walk with your dog?
Hi (имя).
Hello (имя) are you know what's weather like?
It's warm and sunny.
When was the last rain?
In Friday.
(не знаю подойдёт ли тебе такой?)
We are having a lot of fun now