Choose the most suitable words or phrases to fill in the blanks.
All of us ______ obey the traffic laws.
must
can
may
need
Choose the best answer.
Your grandparents live far from you, so you _______ talk to them on the phone regularly.
mustn’t
must
have to
should
Choose the best answer.
You _____ stay up at night, which is not good for your health.
oughtn't to
ought to
don’t have to
must
Choose the best answer.
I can watch TV and play computer games on Sunday because I _____ go to school that day.
don’t have to
oughtn’t to
mustn’t
shouldn’t
Choose the best answer.
I ______ stay overnight at my friend’s house. My parents are very strict about this.
shouldn’t
don’t have to
mustn’t
oughtn’t to
Choose the best answer.
You ______ stare at the computer screen for too long. It is really bad for your eyesight.
shouldn’t
should
must
don’t have to
Choose the best answer.
My friend says: "You ____ drink champagne. You can have a coke or fruit juice instead.
mustn't
ought to
must
don't have to
Choose the best answer.
You_______ drink if you're going to drive afterwards.
shouldn’t
mustn't
must
don't have to
Choose the best answer.
She_______ speak English well because her current job needs it.
doesn’t have to
ought to
has to
must
Choose the best answer.
I ______ go home now to finish my homework.
must
have to
can
may
Choose the best answer.
You ______ pick up Tom at the airport because Judy will pick him up.
mustn’t
don't have to
have to
should
Choose the best answer.
She_____ stay at home to look after her children because there is no one to help her.
has to
must
have to
should
Choose the best answer.
You _____ become more responsible by sharing the housework with other people in our family.
must
have to
can
ought to
Choose the best answer.
My grandparents live in the suburbs, so whenever we visit them, we ______ take a bus.
don’t have to
mustn’t
have to
must
Choose the best answer.
We _____ buy souvenirs for Sally. She doesn't like them.
may
should
mustn’t
don’t have to
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.
don’t have to
have to
mustn’t
must