Rút gọn các mệnh đề quan hệ

Rút gọn các mệnh đề quan hệ:

1. I'd be more interested if I had a family that I had to cook for.

2.Many of the students who hopt to enter the university will be disappointed because only one-ten of those who apply for admission will be accepted.

3.The conclusion which is presented in that book states that most of the automobiles which are produced by American industry have some defect.