Modal Verbs: Permission and Obligation

Front

You ___ park here. (prohibition)

Back

can't

Front

Students ___ wear uniforms at this school. (obligation)

Back

to

Front

You ___ eat in the library. (prohibition)

Back

mustn't

Front

Visitors ___ take photos in the museum. (permission)

Back

can

Front

Employees ___ arrive before 9 a.m. (obligation)

Back

must

Front

You ___ bring your own food to the restaurant. (prohibition)

Back

can't

Front

We ___ finish the project by Friday. (obligation)

Back

to

Front

You ___ pay to enter; it’s free today. (lack of obligation)

Back

have to

Front

Children ___ play in this area. (permission)

Back

can

Front

You ___ smoke in this building. (prohibition)

Back

mustn't