The office building _____ the classrooms. A.behind B.behinds C.is behind
( )This machine is very easy to use.______ can learn to use it in a very short time.
( ) One of his friends ______ his daughter sometimes.
( )The game is _____ funny that many of them like it.
( )Are there _____ trees behind the house?
( ) This new pencil-case is only _____ Jimmy.