Здравствуйте, не получается сделать дз по английскому помогите пожалуйста)

Подчеркните относительные местоимения и переведите их в предложения:
These are the boys who helped us.
Minis are cars which are small.
Pupils who don't do their homework will get worse grades.
Airplanes which are too old are not safe.
Dogs that bark don't bite.
That us the cafe which I like to go.
Ребят помогите пожалуйста)