Viết lại câu sao cho nghĩa Không đổi:

Viết lại câu sao cho nghĩa Không đổi:
1. My grandparents become older every time i see them
my grandparents are ->
2. i'm sure that is mark at the door
that must ->
6. If we cut down more trees, the enviroment will become more pulluted.
the more trees ->
7. i think there would be more people at the meeting, but the actual number was smaller
the actual number -> 
8.i'm tired of clearing your debts for you. i will never do that again.
i will clear ->
Giải thích nữa nha!