Perfect tenses
choose present/past/future perfect
1.I hope they(tell)her the news by the time we come.
2. Where you(to work)before you(to enter) the institute?.
3.He (to study) French before he(to enter)the university.
4.The children already (to decide) what to do with this book.
5.The boy(to show)me the picture which he(to draw).
6. When i(to meet) Tom, he(to eat)ice-cream which he(to buy) at the corner of the street.