The sweater is 20 dollars．（对画线部分提问）
is the sweater？
Sam visits his grandfather every week？（改为一般疑问句）
Sam his grandfather every week？
Fiona didn't stay at home last Sunday．She went shopping，instead．（合并为一句）
Fiona went shopping last Sunday staying at home．
Tom has been to the US before．（改为否定句）
Tom to the US before．
The sunshine is really beautiful．（改为感叹句）
the sunshine is!
Emma helped the old lady with her housework once a week last year．（对画线部分提问）
did Emma help the old lady with her housework？
Grace often helps her mother look after her baby sister．（改写句子，句意不变）
Grace often helps her mother of her baby sister．
"Do you want to go to the concert with me？" Jim asked Laura．（改写句子，句意不变）
Jim asked Laura she to go to the concert with him．
My uncle goes to work by bike every day．（对画线部分提问）
your uncle to work every day？
Li Ling is good at writing poems．（改为否定句）
Li Ling good at writing poems．
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