(Why don't)
Why don't we visit/go to the museum?
Manchester City and United are playing. (Shall)
Shall we watch the football match?
I'm bored. (Let's)
Let's play football
I'm thirsty. (Why not)
Why not drink cola?
It's raining. (Why not)
Why not stay at home?
I'm not busy now. (Let's)
Let's eat pizza
I'm hot. (Shall)
Shall we go to the beach?
I'm hungry. (Why don't)
Why don't we eat ice cream?
It's Ana's birthday. (Let's)
Let's buy her a present
I'm free now. (Why don't)
Why don't we watch Harry potter?
There's a good film on. (Why don't)
Why don't we go to the cinema?