You … ask his advice.
should
We have got plenty of time. We … (must / needn’t / should) hurry.
needn’t
She … (may / should) read this book.
should
I … (could / am able to / can) sleep for hours when I was a little girl.
could
I ... forget about this and move forward.
must
When I entered the room I ... smell roses.
could
The students … (must / may) use a calculator at the Maths lessons.
may
He … speak English.
can
Kate … remember a lot of words.
can
I’m sorry, you didn’t invite me to your birthday party. You … (must / should / need to) invite me next time.
should
You … (needn’t / mustn’t / can’t) take an umbrella today. The Sun is shining.
needn’t
My mother … cook many delicious dishes.
can
Jack … play the guitar very well.
can
My father … drive a car.
can
Tom … (couldn’t / can) play tennis well but he … (could / was able / couldn’t) play a game yesterday because he was ill.
can - couldn’t
Where are my gloves? — I … (can’t / have to / needn’t) put them on because it’s cold today.
have to
My friend ... speak five languages.
can
You ... interrupt the lecturer. It's rude and impolite.
mustn't
Well, it’s 10 o’clock. I … (can / has to / must) go now.
must
You … go to bed now.
must
I … go home.
must