The companies are working together to create ________ they hope will be the best means of transport in the 21st century.
Mary _________be late, so don’t wait for her.
Don’t take the lift in a fire because the lift __________ become trapped between floors.
Frightened by the noise in the night, the little girl __________not sleep in her room.
------These grapes look really beautiful. ------They _________! See the price, 3.99dollars a pound. Very expensive, aren’t they?
Do help yourself to some fruit, __________ you?