阅读下面短文并根据短文内容，从短文后面每题所给的四个选项中选择最佳答案。

When Mary was fourteen, her mother gave her a beautiful ring. It was a birthday present, and Mary was very pleased. But a week later, she was very sad, because when she was working in the kitchen, she lost the ring. She looked everywhere, but she couldn't find it. She even looked in the drain(排水沟) outside the kitchen, but the ring was not there. That evening her brother Tom was eating some cakes. “Who made these cakes?” he said. “They are excellent.” “I made them.” Mary said. She was pleased that her brother liked them. Mary liked cooking very much. “Are there any…?” Tom started to ask. Then he stopped suddenly. He opened his mouth and took a ring out. “Where does this come from?” he asked, “This is a strange(奇怪的) type of cake!” Mary was pleased. “My ring!” she said. She took it to the kitchen. She washed it and then went back and thanked her brother. “I'm sorry you had a surprise,” she said. “But thank you very much for finding my ring. I'll cook some more cakes for you tomorrow as a reward(酬谢).”

1．Mother gave Mary a beautiful ring ________.

[　　]

A．on her birthday

B．because Mary liked rings

C．as a reward

D．because she had last one

2．Mary lost her ring ________.

[　　]

A．on her birthday

B．when she ate a cake

C．soon after her birthday

D．when her mother was out

3．When Mary looked in the drain ________.

[　　]

A．she fell in the drain

B．she didn't find her ring

C．she found a cake

D．she found her ring

4．Tom said the cakes Mary made were ________.

[　　]

5．Mary washed her ring and returned ________.

[　　]

A．to cook cakes again

B．to thank Tom

C．to give it to her mother

D．to eat another cake