根据销售合同审核信用证，将信用证存在的问题以及如何修改填入表格中。

Tom: Hello, Li Lei! This is Tom.
Li Lei: Hi, Tom. Where are you?
Tom: I’m in Toronto. I’m studying here.
Li Lei: That’s great! How’s is it going?
Tom: Not bad. How about you?
Li Lei: Pretty good. How’s the weather there?
Tom: It’s cold. It’s snowing outside.
Li Lei: Snowing? Hainan is sunny and hot.  
Tom: What are you doing?
Li Lei: I’m helping my mom clean the room.
Tom: Oh. Really? Good boy.
Li Lei: Thanks.

Name	How’s it going?	What’s he doing?	How’s the weather?
Tom	1.______________	2.______________________	3.____________________
Li Lei	4.______________	helping his mom clean the room	5.____________________