You ___ wash your hands before eating.
must
You ___ walk on the grass.
mustn't
You ___ litter in the park.
mustn't
You ___ eat too much junk food.
mustn't
You ___ wear your seatbelt when driving.
must
We ___ be quiet in the library.
must
It ________________ sunny at the beach.
was
They ________________ doing their homework.
weren't
They ________________ swimming in the pool.
were
There ________________ any cars on the road.
weren't
There ________________ a cat in the tree.
was
He ________________ happy.
wasn't
Nile is the _______ river in the world.
longest
A blue whale is much _______ than a shark.
bigger
