十三、根据中文提示完成句子。
1. The lion and the mouse (成为好朋友).
2. There are many apples and oranges here. We can have
(一个水果聚会).
3. (走开), little mouse.
4. The library is (在一楼).
5. It is six o'clock in the afternoon. I'm (又饿又渴).

1. become good friends
2. a fruit party
3. Go away
4. on the first floor
5. hungry and thirsty

1. 主语"The lion and the mouse"是复数，“成为好朋友”译为become good friends，其中become表示“成为”，good friends对应主语复数形式；2. “一个水果聚会”译为a fruit party，fruit作定语修饰party，用不定冠词a；3. “走开”是固定祈使句短语Go away，用于表达让对方离开的指令；4. 表示楼层用“on the + 序数词 + floor”结构，“一楼”译为on the first floor；5. “又饿又渴”用形容词hungry和thirsty，用and连接并列形容词。

十四、连词成句，使其成为完整的对话。
A: My e-friend wants to come to Nanjing for the holiday, Dad.
B: Really? 1.
[are, many, in, places, interesting, there, Nanjing (.)]
A: Yes. 2. [show, can, her, I, around (.)]
B: Great! 3.
[cook, your, I, nice, for, can, friend, food (.)]
A: Wonderful! Thanks, Dad!

1. There are many interesting places in Nanjing.
2. I can show her around.
3. I can cook nice food for your friend.

1. 这是there be句型的陈述句，按照“There be+名词+地点状语”的结构组合单词，得到正确句子；2. 这是含情态动词can的陈述句，遵循“主语+can+动词短语+其他”的结构组合；3. 同样是含情态动词can的陈述句，依照“主语+can+动词短语+介词短语”的结构组合。

十五、书面表达。
南希非常喜欢她的新学校。请以"My new school"为题，用there be句型，帮助南希写一篇短文介绍一下她的学校吧！不少于5句话。
My new school

My new school
I love my new school very much. There is a big teaching building in my school. There are twenty bright classrooms in the building. There is a beautiful garden behind the teaching building. There are lots of colorful flowers and green trees in the garden. There is a big playground beside the garden. We can run and play football there after class. I have a happy time at my new school every day.

这篇书面表达围绕“My new school”主题，运用四年级下册所学的there be句型，依次介绍学校的教学楼、教室、花园、操场等设施，语句简单通顺，符合要求的篇幅和知识点。