计算$\left|-\frac{1}{3}\right|-\frac{2}{3}$的结果是（    ）

1.John always does his homework____in order not to make any mistakes.
2.It's ____  to find any excuse when you do something wrong.
3.The factory makes a new type of cars which produces less air____.
4.All the victims were saved and taken to ____ .
5.We all know Mother’s Day is on the ____Sunday of May.            

A: Hi, Lucy. ____.

B: Yes, Tom. What's up?

A: ____ Do you want to go with me?

B: Yes, I'd love to. Why do you want to see the dolphins?

A: ____ I like smart animals.

B: Do you like koalas?

A: Yes, and ____

B: Then when and where shall we meet?

A: ____ OK?

B: OK. See you then.

下列各句中，没有语病的一项是（    ）