1 . 下列句子中的划线部分有可能是错误的，但每个句子有且只有一处错误，请写出错误部分的选项，并在其后的横线写出修改后的词，改错部分不得改变原句的含义。
1. I heard Tom to sing songs in the next room at 4:00 p.m. yesterday.
2. Every students in my class is interested in English songs.
3. What would your sister like having on her fifth birthday?
4. We shouted to our parents to let them know about the dangerous.

2 . 下列句子中各有一处错误，请找出并改正
1. Thank you for to write back so soon. ________
2. When she was walking past that shop, she suddenly heard someone call for help. ________
3. The teacher went on explaining the text after reading the new words. ________
4. I don’t see the fun of play computer games. ________
5. We can shop without go out of our house. ________
6. The boy asked his father to give up to smoke. ________
7. Many people like to watch others playing the game. ________
8. Look around when cross the street. ________
9. The two men stand over there are Mr. Wang’s friends. ________
10. Don’t have him to work at his homework all the time. ________