The old man's clothes, ____ old and worn, looked clean and of good quality.

• A、if
• B、when
• C、though
• D、since

Writing: For this part, you are supposed to write an e-mail in about 100 - 120 words based on the following situation. Remember to write it clearly.

你(Li Yuan)下周一因為要去參加演講比賽，不能上外教(Prof.Smith)的寫作課。請給他寫一封e-mail，內容包括:

·請假并表示歉意；

·解釋不能上課的原因，如比賽的重要性；

·承諾會自學所缺內容并按時交作業；

·祝他偷快。

What can we learn about other parents from their remarks in Para. 1?

• A、They were indifferent to adult learners.

• B、They agreed on the idea of learning chess.

• C、They gave congratulations to the adult learner.

• D、They thought it odd for an adult to learn chess.