单句改错： (共10分)
下面每句中都有一处错误，错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：每处错误及其修改均仅限一词；
1．The song reminded me of the days when we spent together several years ago.
2．He thought she would keep her words.
3．They have married for 20 years.
4．I promised that I will do my best.
5．I don’t doubt if he is a good teacher.
6．I found difficult to follow my teacher in the first English class.
7．I used to get up early, but now I am used to sleep until 11 am.
8．The earth was still just a cloud of dust for several billions years after the “Big bang”.
9.  He couldn’t have his friend getting away with tell people lies！
10. People love to get together to eat, drink and have a fun with each other.