Directions: For some reason, you failed to answer your friend David’s letter in time. Write a letter with no less than 100 words to explain the reasons. Write it neatly on ANSWER SHEET 2. Do not sign your own name at the end of the letter; use "Li Ming" instead. You do not need to write the address.
【参考答案】
[范文] Dear David, I am afraid that you will think me unpardon......