We _________ turn off electronics when not in use. (obligation)
have to
They _________ use plastic straws; they can use metal ones. (not necessary)
don’t have to
They _________ walk barefoot in the school hallways. (prohibition)
can’t
You _________ feed the stray animals; they need help. (obligation)
have to
You _________ speak loudly in the library. (prohibition)
can’t
You _________ park in front of a fire hydrant. (prohibition)
can’t
You _________ pick up after your pet in public places. (obligation)
have to
We _________ waste water when brushing our teeth. (prohibition)
can’t
Factories _________ dump toxic waste in rivers. (prohibition)
can’t
People _________ plant trees to help the environment. (obligation)
have to
Factories _________ reduce their carbon emissions. (obligation)
have to
He _________ drive without a license. (prohibition)
can’t
We _________ turn off the lights to save electricity. (obligation)
have to
We _________ use too much paper; we can go digital. (not necessary)
don’t have to
She _________ bring her own water bottle instead of buying plastic ones. (obligation)
has to
We _________ walk instead of driving when possible. (obligation)
have to
You _________ litter in public places. (prohibition)
can’t
She _________ turn off the tap while washing dishes. (obligation)
has to
She _________ buy a new book; she can borrow one. (not necessary)
doesn’t have to
They _________ bring their own lunch; the school provides food. (not necessary)
don’t have to
You _________ wear a seatbelt while driving. (obligation)
have to
He _________ recycle paper and plastic. (obligation)
has to
Students _________ complete their assignments on time. (obligation)
have to
We _________ wear a jacket; it’s warm outside. (not necessary)
don’t have to
He _________ ride his bike to school instead of taking the car. (not necessary)
doesn’t have to
Students _________ wear sports shoes for P.E. class. (obligation)
have to
People _________ throw trash in the ocean. (prohibition)
can’t
She _________ do her homework before playing. (obligation)
has to
He _________ take a reusable bag to the supermarket. (obligation)
has to
You _________ keep your neighborhood clean. (obligation)
have to