当n为非0自然数时，2n-1表示奇数．______．

Mr. Smith is a good teacher. He is      . There     fifty students in     class. Mr. Green and his students are    friends, too.
Now some of the students       on the playground. Bill and Mike      . Tom and John are jumping. Mary and Lucy are    a kite.       girls are playing    . Mr. Smith is playing      them.

小题1:	A．beautiful B．happy C．kind D．any

小题2:	A．is B．are C．some D．any

小题3:	A．their B．her C．its D．his

小题4:	A．good B．fine C．nice D．all right

小题5:	A．play B．is playing C．are playing D．are play

小题6:	A．run B．running C．are running D．not run

小题7:	A．flying B．doing C．playing D．sitting

小题8:	A．Others B．Another C．The other D．Other

小题9:	A．the football B．a football C．games D．the game

小题10:

A．and B．with C．for D．to