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1. “Would you like to come on a picnic with us?” Peter said to me.
Peter invited me . 

2. I don′t have enough money, so I can′t buy a computer.
If . 

3. “I′m very busy. I′ll ring you tomorrow”, Susan said to me.
Susan . 

4. “Would you like to go to the movies, Sarah?” Mike asked.
Mike invited . 

5. You will pass the exam if you study harder.
Unless you .