题目要求：假定你是李明，不久前向好友John借了本英语书，却发现这本书不见了，写封道歉信，包含下列内容。
要点:
1. 表达歉意；
2. 说明事情发生的经过
3. 提出弥补方式
参考词汇：道歉(apology); 弥补(make up for)。
注意：词数100个左右。

A. were started
B. was started
C. has already started
D. had already started

A. To obey some spoken instructions.
B. To listen to other people.
C. To show the intention to communicate.
D. To ask some questions through gesture.