I've been playing tennis with Mary. But I was _____ by her.

Ten minutes _____ an hour when one is expecting a phone call.

Ten minutes _____ an hour when one is expecting a phone call.

The engineer （ ） my father works is about 50 years old.

The defense computers calculate way to （ ） the enemy missiles.

The little boy saw the plane_____and burst into flames.

Only when （ ） in the afternoon （ ） able to leave.

The reason is （ ） he is unable to operate the machine.

Her sister always spends so much _____ her clothes that she can’t manage to live with her salary.

Feed plants and they grow; （ ） them and they suffer.

_____, the professor is still trying to learn a new language.

—Are you （ ）? —No, I’m serious.