______ you swim? Yes, I can.
COULD
CAN
You should wait until tomorrow before calling them because they ______ call you this afternoon.
MAY
CAN
It ______ be quite boring for you.
COULD
CAN
I ______ understand what you're saying. Speak more slowly, please.
MIGHT NOT
CAN'T
I'm sorry, but you _______ swim in this lake.
CAN'T
COULDN'T
If you tell your parents that you broke the window, they ______ get angry.
MIGHT
CAN
You _______ improve your English if you watch more films in that language.
COULD
MIGHT NOT
What ______ we give her as a gift?
MAY
COULD
I ______ win the painting contest, but I'm sure I'll have fun participating.
MIGHT NOT
CAN
We _______ go bungee-jumping next weekend, if you like!
CAN
MAY
You _______ win a prize if you enter our competition!
MIGHT
COULDN'T
If you spill your drink on the furniture, you _______ ruin it.
MAY
CAN
_________ I go to the toilet, please?
MIGHT
CAN
Your mum _____ let you go to the party this weekend because you didn't get good marks at school.
MAY NOT
COULD
When I was a baby I ______ speak.
COULDN'T
MIGHT NOT
______ I take another biscuit?
MIGHT
COULD
