18袋大米5天售完，平均每天售出总袋数的______，平均每天售出______袋．

情景交际。

A.  根据对话情景，在空白处填上一个适当的单词，使对话完整通顺。

A: Your English is very good, Zhang Lei. Can you please tell me (1)______ you learn it?

B: I learn English (2) ________ speaking as much as possible in and (3)______ of class.

A: Do you learn English by watching English language (4)________?

B: Yes, (5)________often. And I also listen to tapes.

A: Do you study grammar?

B: No, I never study grammar. It’s (6) ______ and I don’t think it is helpful.

A: I can’t get the pronunciation right. What should I do?

B: Don’t worry. Try to speak English as (7)______ as you can. You can also (8) ______ it with your friends.

A: I enjoy reading English magazines, but my reading is usually slowed down by too many new words. (9)________ should I do then?

B: You can always write the new words on a small piece of paper and study them when you are free.

A: Thank you very much!

B: It’s my (10)______.