Boys like playing _______ basketball after school.
Keep the machine _______, and you will know how it works.
—What was Tom doing _______ it was raining?—He was doing his homework in the bedroom.
Yesterday, a man said he saw _______ UFO in the park. The police are looking for _______ UFO now.
He _______ eight hundred thousand dollars for his Benz(奔驰) car.
She told us that she _______ her handbag on the bus.