Ответ:

A: Hi Tim! What are you doing this evening ?

B: Not a lot. Actually,I am having a quiet evening at home alone.

A: Why don't you come round to my house ?? I am inviting a few friends over for dinner...

B: I am not sure.I am quite tired .

A: How about tomorrow night ??

B: I am going to the cinema with my brother.

Why don't you come,too??

A: Great !! I'd love to...