根据句意及提示，写出句中所缺的单词。
Dr Bethune was busy performing an ________(手术)on the dying man．
He lives a simple life．He likes ________(储蓄)money．
My uncle is an _______(精力充沛的)businessman．He always works till midnight．
－Your white blouse ________(与……相配)your black trousers very well．
－Thank you．
Do you play an ________(积极的)part in the class activities．
按要求完成句子。
Her sister is more careful than Ann．(同义句)
Ann is not ________ ________ ________ her sister．
We stayed at home because it rained heavily．(同义句)
We stayed at home ________．
This picture is more beautiful than those two pictures．(同义句)
This picture is ________ ________ ________ of the three pictures．
Walk the dog at 7 a. m.．(改为否定句)
________ ________ the dog at 7 a. m.．
You should walk your dog once a week．(对划线部分提问)
_______ ________ ________ you ________ your dog?