Listen to the welcome letter and put the following procedures in the correct order according to the letter.[音频]

Read the text in Lesson 15 again and put the following sentences in correct order according to the text.

Put the following steps of returning or exchanging into correct order. 将下列退换货的的流程按正确顺序排序

（必选题）Please put the procedures in correct order(排序）: A.choosing the room, B.entering details C.choosing the hotel. The right order is 1.____2. ____3. ____

Processes are [u]      [/u]. A: some steps carried out in writing B: series of steps carried out in a definite order C: something people put into a system to deal with D: none of the above