We generally have four people working in the shop, but at ____ periods we employ extra hands.
A、top
B、rush
C、tip
D、peak
The sweater she received in the end differed ____ the one she had seen online.
A、by
B、in
C、with
D、from
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)下周一因为要去参加演讲比赛,不能上外教(Prof.Smith)的写作课。请给他写一封e-mail,内容包括:·请假并表示歉意;·解释不能上课的原因,如比赛的重要性;·承诺会自学所缺内容并按时交作业;·祝他偷快。