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e r m . 2 . P e n icil li n wa s d is c o v e r e d b y Alex a n d e r F lem in g . ( 改為一般疑問(wèn)句 ) p e n icil li n b y A lex a n d e r F lem in g ? was discovered was seen was bought Was discovered 3 . T h e b o o k s w e r e writ t en b y M r . L i m a n y y e a r s a g o . ( 改為否定句 ) T h e b o o k s b y M r . L i m a n y y ea rs a g o . 4 . T h ei r h o m e wo rk wa s h a n d ed i n y e s t er d a y W . ( 對(duì)畫(huà)線部分提問(wèn) ) t h ei r h o m e wo rk i n ? 5 . W e d i d n 39。 t g r o w v eg et a b l es i n t h e g a rd en l a s t y ea r . ( 改為 被動(dòng)語(yǔ)態(tài) ) V eg et a b l e s i n t h e g a r d en b y u s l a s t y e a r . weren39。t written When was handed weren39。t grown