英语同义句改写(3句)

题目

英语同义句改写(3句)
1.The scientist spent five years studying what the future may have in store for hunman beings.
________ _______ the The scientist spent five years _____ _____what the future may have in store for hunman beings.
2.His decision to study medicine has made his parents proud.
He _______ _____ study medicine,which made his parents proud.
He ___ ___ ___ study medicine,which made his parents proud.
3.Will you help me prepare for the birthday party?
Will you help me ___ ___ ____ the birthday party?

答案

1.It took / to study
2.decided to
determined to
3.in preparation for