阅读下面短文，并用英语回答问题（请注意每小题的词数要求）。

Mary is an English school girl. She studies in a middle school. She has a little brother. His name is Tom. Tom is only three. Mary likes him very much.

Today is Sunday. Mary wants to do her homework. She takes out (取出) her pencil-box and opens it. “Oh, dear! Where’s my pen?” She can’t find her pen. She goes to ask her brother in his bedroom.

“Tom! I can’t find my pen. Can you see it? Oh, why is my pen in your hand?”

“I’m writing to my friend Peter.” Tom answers.

“But how can you? You don’t know how to write.”

“It doesn’t matter (没关系). Peter can’t read.” Tom says.

【小题1】What day is it today? (不超过5 个词)
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【小题2】Where is Mary’s pen? (不超过5个词)
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【小题3】Who can’t write or read the letter? (不超过5个词)
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