There are some students in front of the lost and found box. The duty monitor Alan is asking some questions.

Alan: Jim, is this your English book?
Jim: No, it isn’t.
Alan: Linda, is this your English book?
Linda: Yes, it is. Thanks.
Alan: Gina, what colour is your pencil?
Gina: It’s green.
Alan: Is this your pencil?
Gina: Yes, it is. Thank you.
Alan: What is your name?
Jenny: My name is Jenny.
Alan: Is your ruler green or yellow?
Jenny: It’s green. There’s my name “Jenny” on it.
Alan: Oh, here you are.
Alan: Here’s a nice bag; whose bag is this?
Paul: Let me see. . .  Oh, it’s mine.
Alan: Look at the cute doll. Is this yours, Mary?
Mary: No, it isn’t. I think it’s Betty’s. Is there a watch in it?
Alan: Sorry, I haven’t seen it so far.
根据对话内容, 完成以下任务。
Students lose things. They can look for them in the            .
Gina lost a　         . The colour is             .
The owner of the English book is　　　　     .
The owner of the bag is　　　　    .