Rewrite: That boy will have a test of English next Friday. I am sure of that

II. Rewrite the following sentences. Use the word in bracket
1. That boy will have a test of English next Friday. I am sure of that.
-> I am sure ............................................
2. My mother didn't play the piano badly
-> my mother was .....................................................
3. They may be absent from school tomorrow if they don't staying up late
> Without ................................................................
4. Unless Nam practices English regularly, he can be good at English
-> If Nam ..................................
III. Rewrite the following sentences. Use the word in bracket
1. The film's ending is dramatic.
->The film ends ........................................
2. The river is too dirty for us to swim in. ( because )
-> We can not ................................................
3. Why don't we join them on the trip on the mountain?
-> I suggest .......................................
4. In spite of my friend's encouragement, I remain disappointed.
-> Though ..............................................
5. When did you start learning English?
-> How long ..........................................