1.These boys like playing in the street. 這些男孩喜歡在街上玩。

2.There is a book in the desk.

書桌裡有一本書。

3.After I got in the car, my father drove off.

我上車後，爸爸就開車了。

4.We all know there are thirty-one days in January.

我們都知道一月份有31天。

It startled me to find her sitting in my office.

1.The stamps are available singly or in books of ten.

郵票有單枚的，也有十枚一冊的。

2.Guests arrived singly or in groups.

客人有單個來的，也有三三兩兩一起到的。

3.No one could tell whether he was in earnest or in jest.

誰都不知道他是認真的還是在開玩笑。

1. Hang in there! 堅持住！

2. It's all in a day's work. 是很平常的事。

3. No way in hell. 絕對不行。

4. He was lost in thoughts。他陷入沉思。

5. We need to dig in our heels. 我們得堅定立場。

6. I'll just stay in. 我不出去了。

7. You are in for a surprise. 有驚喜在等著你。

8. There is a pencil in the box.
匣子裡有一枝鉛筆。