Which modal is used for...
Ability
Possibility/Probability
Obligation
Advice
100

giving an advice

should

100

I __________________ the piano very well. ( play)

 can play

100
You __________________ get a 100% on the test (get).

might get

may get

could get

100

When we get home, we ________________ our parents. (call)

must call, have to call

100

You ______________ more if you want to get better.(study)

should study

200

something you are capable of doing

can

200

She  _____________you out once she is finished her shift at work. ( help)

can help

200

It ____________________ tomorrow so I think I'm bringing an umbrella. (rain)

might rain 

200

She _____________ her homework for tomorrow. (do)

 must do, has to do

200

I don't think that we ______________ there. (go)

should go 

300

something that is not certain to happen

could, may, might

300

He _____________ outside for hours when he was young. ( stay)

 could stay

300

Who ___________ to the party? (come, negative)

might not come

300

She is so lucky she _________________ do her laundry. (do)

doesn't have to do

300

My parents __________________ us home alone. (leave, negative)

shouldn't leave

400

asking to go to the washroom

may

400

When I was six, I _________ the piano very well. (play)

could play

400

_______________ the teacher _________ us homework tomorrow? (give)

Could, give

400

The doctor told him that he _______________ bananas because of his high potassium levels. (eat)

must not eat

400

Who ______________we _________ if we have an emergency? (call)

should we call

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