填入一个适当的词补全对话，每空一词。

A：Come in．please．

B：Glad to see you at home．I’m here to give back the 1  you lent me．

A：Did you enjoy it?

B：I’m 2  not．I only read a few pages and then gave up．

A：Why? Isn’t it interesting?

B：Maybe，but I had to stop to look up new words in a dictionary frequently（频繁地）．

A：Why   3   guess their meanings?

B：Sounds good．May I borrow another one and have a try?

A：Certainly．What   4 this book ? It’s easier and I think you’ll be interested in it．

B：It’s very kind of you．Thank you very much．

A：  5  welcome．