Hello,Wang Jing,
I'd like to invite you to have a lunch with me at 12:00,Friday,5th of May.But I don't know whether you're available on the time.I don't know if I have time in the day either.Because it is neither our summer holiday nor a normal weekend.I even don't have enough time to go back home after our school class.But our homework requires this kind of invitation in no reason.So I leave it for you to find a choice anyway.You may ask someone (our teacher?) who assigns this silly homework for answer.One thing seems sure:the time of the invitation indeed involves three fives.Is it the brand 555 significant?
Cheers always.
Xxx