Mr. Wang made up his mind to devote all he could ____ his oral English before going abroad.
There were no tickets _________ for Friday’s performance so we went to the cinema instead.
.________ the sunlight for a long time is harmful to your skin.
______ in his book, he didn’t notice me when I entered the room.
The door is low, so ______ your head when you go in.
—Why is he feeling disappointed today? —Because the suggestion hehas been turned down.