X. Complete each of the following sentences in such a way that it means exactly the same as the sentence printed before it. (1,0 pt)
1. Students don’t have to wear forage-caps on Monday mornings.
-> It isn’t ..........................................................................................................................
2. It is nearly ten years since I last saw her.
-> I have………………………………………………………………………………..
3. If we don’t save natural resouses, they will run out soon.
-> Unless we……………………………………………………………………………
4. Minh didn’t go to school last Saturday.
-> Minh was ………………………………..….…….…….
5. My mother spends two hours cooking a day.
-> It takes………………………………………………………………………………
