-Jack,let me h___you.-Thanks.My rule is blue.（对画线部分提问）____ _

1.-Jack,let me help___you.-Thanks.(根据句意可知)
2.My rule is blue.（对画线部分提问）
_What___ __colour___ _is___your ruler?(显然是提问颜色 what colour 问颜色,单数is,复数are)
3.I want a black bag.（改为一般疑问句）
_Do___you __have___a black bag?(含有实义动词的句子,一般现在时助动词用do/does这里是第二人称,故用do,后面谓语动词用原形)
4.Li Lei likes his white shirt.（改为否定句）
Li Lei_doesn't___ __like___ his white shirt.(含有实义动词的句子,一般现在时助动词用do/does这里是第三人称,故用does,否定doesn't,后面谓语动词用原形)
5.Is the sweater seven dollars?（做否定回答）
__No__,_it__ _isn't___.(谁提问谁回答,主语the sweater用代词it替代)

1.Do you want a black bag?
2.Li Lei doesn't like his white shirt.
3.No, it isn't .