He is only too ready to help others, seldom, ____, refusing them when they turn to him.[ ]

The boat is ______ small, we can’t put _____ food in it.[ ]

During the flight to the Moon, Chang’e II Satellite gradually ________ her direction so that she can go into her programmed orbit.

Hello, Mr Green! Could you tell me something about your study—OK, but I’m busy now. I’ll get back to you ________ a minute.

They found ­_______very hard tomove the stone.