IV. Choose the underlined word or phrase in each sentence that needs correcting :
1. Did you saw your friends when you went to HN last week ?
2. I have already had breakfast, then I went to school .
3. .When I were studying my lesson, the phone suddenly rang.
4. Since I begin school, I haven't had much spare time.
5. Before she became a film star, she has been a stand-up comedian.