Ability
Possibility
Necessity
Obligation/Advice
Permission/Requests
100
Five years ago, I (cannot, couldn't) play the piano.
Five years ago, I couldn't play the piano.
100
When I grow up, I (may, might) become an engineer.
When I grow up, I may become an engineer.
100

I think I (will, might) go to the beach this Sunday.

I think I will go to the beach this Sunday.

100

We have enough milk in the fridge so we (must, mustn't) buy some more.

We have enough milk in the fridge so we musn't buy some more.

100

Mom (may/might) I go out tonight?

Mom may might I go out tonight?

200
We (can, could) speak English well.
We can speak English well.
200
(Might, May) I have a glass of water?
May I have a glass of water?
200

I am feeling tired. I think I (can, will) go to sleep now.

I am feeling tired. I think I will go to sleep now.

200

Time is not on our side. We (must, mustn't) hurry.

Time is not on our side. We must hurry.

200

There is a small chance, it (might /may) rain tomorrow

There is a small chance, it might rain tomorrow

300
The volleyball team (can, could) go to the Olympics this year if they are lucky.
The volleyball team could go to the Olympics this year if they are lucky.
300
There is a small chance that we (may, might) go to the beach this weekend.
There is a small chance that we might go to the beach this weekend.
300

I (won't, could) act like my father when I grow older.

I won't act like my father when I grow older.

300

Mary gave me a letter to send. I (must, mustn't) forget to mail it.

Mary gave me a letter to send. I mustn't forget to mail it.

300

On T.V. the reporter said there __________ be some storms this weekend

On T.V. the reporter said there might be some storms this weekend

400
I (cannot, couldn't) run that fast when I was six years old.
I couldn't run that fast when I was six years old.
400
If you leave the stove on, the house (may, might) catch on fire.
If you leave the stove on, the house might catch on fire.
400
If you get in trouble, I (won't wouldn't) help you.
If you get in trouble, I won't help you.
400

You (shouldn't, mustn't) wash those carrots. They've already been washed.

You shouldn't wash those carrots. They've already been washed.

400

________ I skip tomorrow’s class? I have got and important job interview

May I skip tomorrow’s class? I have got and important job interview 

500
I think I (can, could) help you learn math if you study hard.
I think I can help you learn math if you study hard.
500
Billy and I (may, might) cook dinner tonight.
Billy and I may cook dinner tonight.
500

(Will, Can) you marry me?

Will you marry me?

500

He will be studying English for another two hours. We (mustn't, shouldn't) visit him now.

He will be having lessons for another two hours. We shouldn't visit him now.

500

She _______ have a birthday party next weekend. 

She may have a birthday party next weekend. 

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