come to london and find a job here, u can live with me in my house.

OK,I' am coming.

好的，我正赶过来呢！

外国人的幽默，你也要幽默回去啊，呵呵。

are you kidding？就没有幽默感了。

are you gonna help me with my visa and job hunting?

LOL， ok, you wait there, I will be right over there in 10 mins!

OK,let me pass the IELTS/TOEFL exam

你应该说Do you really mean it?
Iam on the way to london

你应该回答：
Come to China and find a job here, u can live with me in my house.