If you like, you _____ use my computer.
have to
can
You are driving too fast; I think you ______ slow down.
should
I _____ pick you up after school because I am working late tonight.
can't
You ________ spend all your money when you go shopping.
shouldn't
must
should
couldn't
When you go on the Internet, there are some rules you ______ follow.
must not
should
She _____ send an email until yesterday.
can't
couldn't
Cats cam climb trees but elephants _________ do it.
can't
could
couldn't
can
Your hands are dirty; you _____ wash them.
should
Kim ______ write very fast, so she does her homework on the computer.
can't
can
couldn't
could
Phelps ___________ swim when he was born
can
could
can't
couldn't
_____ you play tennis when you were younger?
Could
“You don’t look well. You _______ see a doctor.”
must not
shouldn't
should
must
First of all, you ________ be careful who you talk to.
should
must not
John ______ play video games; he doesn't have a computer.
can't
couldn't
You ______ throw away old appliances. Instead, you ______ donate them to charity.
should, shouldn't
shouldn't, should
shouldn't, can't
shouldn't, must
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.
couldn't
could
can't
can
You _____recycle old appliances.
must not
should
Danielle _____ skate at the age of six.
could
can't
can
Children ____ play with electricity.
shouldn't
can't
Also, you _______ only visit safe sites that your parents say are OK to go on.
should
must not
_____ you understand these instructions?
Can
I _______ go out right now. I am doing my homework!
cannot/ can't
Jake _______ work on his computer yesterday because it wasn’t working.
could not/ couldn't
He _____ use a laptop, he doesn't know how.
can
can't