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(nèi)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(xué)所缺內(nèi)容并按時交作業(yè)；

·祝他偷快。

29.

• A、letting

• B、hiding

• C、having

• D、allowing

2. In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.

• A、there

• B、thick

• C、thank

• D、thirty