( )(2)下午老师上课时,可以说: A.Good morning , class. B. Good afternoon,class.
( )-What’s this? -It’s _______chair. A. an B. a
( )—How old ______ you? A. is B. are
( )—How _____ boys? —Five. A. many B. old
( )Stand _______ A. up B. in
( )What color ______ it?. A. are B. is