Modals verbs

I___________ study for the exam. (obligation 100%)

• must

• can't

• could

• may

Answer explanation

In this case, the correct choice is 'must' because it indicates a 100% obligation to study for the exam.

You ________ eat a lot of candies every day. (obligation 25%

negative)

• have to

• shouldn't

• mustn't

• may not

Answer explanation

The correct choice is 'shouldn't' because it indicates a negative obligation, advising against eating a lot of candies every day.

She___________speak Spanish fluently. (ability)

• can

• couldn't

• may

• shouldn't

Answer explanation

The correct choice is 'can' because it indicates the ability to speak Spanish fluently in the present. 'May' and 'shouldn't' are not suitable for expressing ability in this context.

She__________ play video games on school nights. (prohibition)

• must

• have to

• can't

• may not

Answer explanation

The correct choices are 'can't' and 'may not' because they indicate prohibition, meaning she is not allowed to play video games on school nights.

We __________ finish this project by tomorrow. (obligation 50%)

• mustn't

• can

• have to

• may not

Answer explanation

The correct choice is 'have to' because it indicates an obligation, and in this context, it implies a 50% obligation to finish the project by tomorrow.

You ___________ come to the party if you want to. (permission)

• may

• couldn't

• should

• mustn't

Answer explanation

The correct choice is 'may' because it indicates permission. 'Couldn't' and 'mustn't' imply prohibition, while 'should' suggests advice, which are not suitable in this context.

She ____________ eat seafood because he's allergic. (prohibition)

• must

• can

• may not

• can't

Answer explanation

The correct choice is 'can't' and 'may not' because they indicate prohibition, meaning she is not allowed to eat seafood due to her allergy.

You ___________ call your mom on her birthday. (obligation 50%)

• shouldn't

• may

• mustn't

• have to

Answer explanation

The correct choice is 'have to' because it indicates a 50% obligation, suggesting that calling your mom on her birthday is necessary but not absolutely mandatory.

They ____________ have a picnic if it rains. (possibility)

• may

• shouldn't

• must

• may not

Answer explanation

The correct choice is 'may' because it indicates the possibility of having a picnic if it rains.

She ___________ go to the movies tonight. (possibility)

• must

• may

• shouldn't

• can't

Answer explanation

The correct choice is 'may' because it indicates a possibility, suggesting that she has the option to go to the movies tonight.