562. Will you be free tomorrow evening? 你明晚有空吗?

561. We often call him by his nickname． 我们经常叫他的绰号。

560. To be honest with you，I"m twenty． 老实说，我20岁。

559. They employed him as a consultant． 他们雇用他为顾问。

558. There is a chair below the window． 窗户下面有一把椅子。

557. The girl in red is his girlfriend． 穿红衣服的那个女孩是他的女朋友。

556. She spent a lot of money on books． 她花了很多钱来买书。

555. She is poor but quite respectable． 她虽穷，人品却很端正。

554. Once you begin，you must continue． 一旦开始，你就得继续。

553. Money is no more than our servant． 金钱不过是我们的仆人。