( )7.There ____ a storybook on the desk.

A.is
B.am
C.are

【解析】：本题考查there be句型中be动词的用法。there be句型遵循“就近原则”，即be动词的单复数形式由离它最近的名词的单复数决定。本句中离be动词最近的名词是“a storybook”（一本故事书），为单数形式，所以be动词用is。A选项“is”用于单数主语；B选项“am”只用于第一人称单数“I”；C选项“are”用于复数主语。因此，正确答案是A。
【答案】：A

Ⅲ. 阅读短文,判断下列句子的正(T)误(F)。
My dog has five new puppies on January 15th. They still can't see. It's January 20th. My puppies are five days old. They have white fur now. They are sleeping in the sun. On January 31st, their eyes are open. They are round and brown. On February 14th, they can run and play with me. How cute!
( )1. My new puppies can't see on January 15th.
( )2. My puppies have brown fur on January 20th.
( )3. It's a sunny day on January 20th.
( )4. My puppies' eyes are open on January 31st.
( )5. On February 14th, they still can't run.

1. T 2. F 3. T 4. T 5. F