Modals

I________pay my taxes in Hacienda, if not I'll have a punisment!

• have to

• must

Answer explanation

External obligation

You____get a Visa for the U.S.A. if you want to visit this country.

• must

• have to

Answer explanation

External obligation

I_____visit "The Eiffel Tower", because, It's amazing and beautiful!

• must

• have to

Answer explanation

A wish.

I______eat much sugar, and bread. I'm on a diet!

• don't have to

• mustn't

Answer explanation

Internal obligation

We _____wash our hands, because we don't want to get any infection.

• have to

• must

Answer explanation

Internal obligation

______I go to the bathroom, please?

• Must

• May

Answer explanation

Permission

You_____see the doctor, you have a fever!

• may

• have to

Answer explanation

External obligation

Mary______work in the museum on Sunday, she loves her work!

• has to

• must

Answer explanation

Internal obligation

The day is a little bit cloudy, It____rain later!

• might

• may

Answer explanation

Probability (less than 30%)

Excuse me, teacher, _______you explain me the topic, later?, please!

• may

• might

Answer explanation

Possibility