Engines are to machines _________ hearts are to animals.
They __________ two free tickets to Canada, otherwise they’d never have been able to afford to go.
—Is there anything wrong, Bob? You look sad. —Oh, nothing much. In fact, I __________ of my friends back home.
The flowers were so lovely that they __________ in no time.
—Ouch! You hurt me! —I am sorry. But I __________ any harm. I __________ to drive a rat out.
—I have got a headache. —No wonder. You __________ in front of that computer too long.