_____ you play tennis when you were younger?
Could
You _______ drink alcohol, you can have a soft drink.
mustn't
don't have to
Cats cam climb trees but elephants _________ do it.
couldn't
can't
can
could
You are driving too fast; I think you ______ slow down.
should
The school rules say that we _____ use our cell phones in the classroom.
must not/ mustn't
It's optional. We _____ to go if you don't want to.
mustn't
don't have to
You ______ throw away old appliances. Instead, you ______ donate them to charity.
should, shouldn't
shouldn't, should
shouldn't, must
shouldn't, can't
Secondly, you _______ give out your personal information when you’re chatting online because you don’t really know the other person.
should
must not
First of all, you ________ be careful who you talk to.
should
must not
When you go on the Internet, there are some rules you ______ follow.
must not
should
We _____ always have a ticket when we travel on the bus.
must
Also, you _______ only visit safe sites that your parents say are OK to go on.
should
must not
If you like, you _____ use my computer.
have to
can
Visitors __________ smoke.
mustn't
don't have to
I _______ go out right now. I am doing my homework!
cannot/ can't
You _____recycle old appliances.
should
must not
When the traffic light is red, you ______ go on.
don't have to
mustn't
Jake _______ work on his computer yesterday because it wasn’t working.
could not/ couldn't
You ________ spend all your money when you go shopping.
must
should
shouldn't
couldn't
Your hands are dirty; you _____ wash them.
should
You _____ respect your teachers.
should
could
can
must
We ______ go to bed early on Saturdays. Mom lets us stay up a bit later.
don't have to
I like Sundays because I _____ go to work.
don't have to
mustn't
You _______ turn off your cell phones during the test.
must
must not
shouldn't
should
You ____ touch electric sockets with wet hands.
must not
don't have to
Danielle _____ skate at the age of six.
could
can't
can
“You don’t look well. You _______ see a doctor.”
should
must not
shouldn't
must
John ______ play video games; he doesn't have a computer.
couldn't
can't
She _____ send an email until yesterday.
couldn't
can't
Kim ______ write very fast, so she does her homework on the computer.
can
couldn't
can't
could
Finally, you _______ open strange emails.
must not
should
I _____ pick you up after school because I am working late tonight.
can't
He _____ use a laptop, he doesn't know how.
can
can't
Phelps ___________ swim when he was born
couldn't
can
could
can't
You _____ touch wires.
must not
must
You ______ be careful with knives.
must
don't have to
_____ you understand these instructions?
Can
Kate needs to go out and do more things. She _______ spend every weekend playing computer games and chatting online.
should not/ shouldn't
Phelps couldn’t swim when he was born but he _________ swim really fast now.
can
couldn't
can't
could
Children ____ play with electricity.
shouldn't
can't