--Whose shirt is this? Is it Tom’s? ---No, it isn’t, ______ is white.
I find difficult for Tom to reach that picture.He is a little short.
----Is Emma sister?----Yes, is.
We must try ______ best to make our city more beautiful.
I think____ important to learn English well.
比较划线部分的读音，选出一个与其他三个发音不同的单词.
