6. I would eat more
7.I would get good marker
8 I would see handsome boy

3.l would help poor people 
4.l would visit big ben 
5.l would feel boring 

2/ If my friends comes to my house today, I will invite him to a marvellous restaurant.
3/ If I were rich, I would buy a plane.
4/ If somone invited me to London, I would politely refuse him. (him hay her gì tuỳ bạn)
5/ If my friens forgot my birthday, I would remind them.
6/ If I wanted to lose weight, I would eat less and do more exercise.
7/ If I studied harder, my final exams would not be bad.
8/ If I go to the beach, I will build the sand castles.

5/ If my friends forgot my birthday, I would remind them.
P/s: Sorry, chỗ này mình ghi sai.