1.she has lunch at twelve (对划线部分提问)at twelve___ ___does she have lunch?2.thanks for your letter(改为同义句)__ __ for your letter.3.jack eats breakfast at home(改为一般凝问句)__ jack__breakfast at home?4.he brushes his teeth in the morning (改为否定句)he__ __ his teeth in the morning.5.l do my homework at six thirty(改为否定句)l __ __my homework at six thirty