中级

单选题请回答20_________题。

参考答案:E进入在线模考
Man: This month I'm busy and tired.  In my  section a new product is on sale. Every day I  have to work for more than ten hours.  I'm  always being asked about the price, quality and  others. Though I get a good pay this month, I  think what I have done is more than what I've  got.