为什么The old woman kept a pet dog keeping happy last year.里的keep后要加ing?

The old woman's_________is white how old is the old woman i think she isA.70-year-old B.70 yearsC.70 year old D 70 years old 说下为什么 He helped the old woman across the road.across的用法对吗?为什么? Let the old woman get on the bus first.中为什么用get on? shocked by the bad news,the old woman broke dowm为什么用shocked? The old woman looks worried.She is____something The woman is old.(改为感叹句） The old woman is ill in bed The woman is old.改为感叹句帮忙~~~~ The woman is old.改感叹句 The old woman is carrying a ____box. the old woman d___ on her son. the old woman (run) every morrning The old woman is _____weak ____look after herself.填too to还是so that ,说明为什么 英语翻译old woman cross the road yesterday.为什么用cross,而不用across? The old woman feels even _____(old) than before. I know the old woman.（改为一般疑问句）__________ __________know the old woman? the old woman greeted me friendly.改为同义句the old woman greeted me___ ___ friendly___.