He had a wonderful childhood, ________ with his mother to all corners of the world.[ ]

Hi, Jack. Did you go to Lucy’s birthday party—No, I felt so sad. I_______then.

The Medical Research Council said it could not _____ use of the new drug without further tests.

He is businesslike（认真的）and is often _______. I hope he will have more _______ at his business.

He _______ eight hundred thousand dollars for his Benz(奔驰) car.