I. 1. lay out

   2. end up

   3. a symbol of

   4. put on

   5. play a trick on

   6. As a result

II. 1. He said his father would come back in two days.

    2. Could you tell us if / whether he enjoys living in China?

    3. Mom asked me if / whether I was late that morning.

    4. Li Lei wants to know if / whether Peter came here yesterday.

    5. What interesting stories (she’s told us)!

    6. How excited Kitty was to open her birthday presents!

III. 1. is quite similar to

     2. washed away

     3. in the shape of

     4. remind me of

     5. dressed up

     6. spreading

IV. One possible version:

August 15th in Chinese Lunar Calendar is the Mid-Autumn Festival. It is one of the most important traditional festivals in China. This festival is to celebrate the harvest and enjoy the beautiful moon. On this day, people usually get together with their families and have a nice meal. After that, they always eat delicious mooncakes, and enjoy the moon which is very bright and round on that day. It makes people think of their relatives and friends. People usually make their best wishes for the next year to the bright full moon. It is a day of pleasure and happiness. This is Mid-Autumn Festival in China. What a great festival!