You _____ be 18 years old before you are allowed to drive a car ,and it’s also essential to get a driver’s license
The scientist _____ Canada and he will give us a talk when he _____ back.
He found his book this morning, but now he _____ his pen.
She ____ to her hometown several times.
It _____ Jane and Mary who helped me the other day.
I _____ to bed when the telephone rang.