Put the correct answer into the box.

ought not to

ought to

You_________do homework before you go out with your friends.

Choose the best answer.

You ______ stare at the computer screen for too long. It is really bad for your eyesight.

Choose the best answer.

My grandparents live in the suburbs, so whenever we visit them, we ______ take a bus.

Choose the best answer.

She_____ stay at home to look after her children because there is no one to help her.

Choose the best answer.

You _____ stay up at night, which is not good for your health.

Choose the best answer.

We _____ buy souvenirs for Sally. She doesn't like them.

Choose the best answer.

If you are a member of the club, you ______ pay to use these facilities because they are included in the membership fee.

Choose the best answer.

You _____ become more responsible by sharing the housework with other people in our family.