Choose the correct words to complete the suggestions.
1 Let's use / to use that computer over there.
2 Shall we / We shall include some cartoons in the magazine?
3 Let's / Why not ask our teacher to help.
4 Why not / Shall we play hockey?
5 Let's / Why not write down our ideas first?
6 Why don't we / Why we don't put a notice on the website?
They