阅读下面短文, 掌握其大意, 从A、B、C、D四个选项中选出最佳选项。
My friend Paul called me on Sunday afternoon. He was very1 . "Hi, Dan, " he said. "Someone stole my chocolate cake!" "That's terrible!" I said. "2 me about it. "
"Well, this morning I decided to bake a cake. When the cake was done, I left it on the table. Then I walked the dog. 3 when I came back I found the cake missing. "
"Who else was in your house?" I asked. "My two roommates were 4 at home, " replied Paul. "But they denied taking the cake. I know you're very good at 5 the truth. Help me. ""OK. I'll be there in about 20 minutes, " I said.
When I got to Paul's house, he took me into the kitchen. There I saw a(n)6 plate on the table. Some chocolate cake crumbs(蛋糕屑) were seen on it.
"When you went to walk the dog, how long were you away?"I asked. "About half an hour, " Paul replied. "Someone must have been very hungry. He ate the whole cake very7 .
First, I asked Paul's roommate Todd about the cake. "I didn't take the cake, " he said. "I was in my room talking to my sister on the phone. You8 call to ask her. "
Then I asked his roommate Sean. "Then I was going to the post office to 9 a package(包裹), "he said. "I can show it to you. "
"Could they both be telling the10 ?" asked Paul. "No, " I said. "Sean wasn't. The post office isn't open on weekends!"