2 iam pleased to hear from you after such a long time

-> cấu trúc : ng + adj + ed 

-> such + a/an + adj / N 

3 i love going to the ballet show with you but I am not free until 6.30 p.m

-> cấu trúc love + V-ing 

4 how about  coming to my flat and having something to eat before we go ?

-> cấu trúc how about + V-ing 

5 i don't want to take my car because it is difficult to find somewhere to park

-> cấu trúc want + to V 

-> cấu trúc dificult to do something 

6 why  don't we go by taxi ? 

-> cấu trúc why don't + S + V nguyên mẫu + .. 

-> by + phương tiện giao thônng

7let's hope that dancing will be as good as reviews

8 i am looking forward to seeing you tomorrow night

-> looking forward to + V-ing