Whose book are these?

________.

[　　]

A．They're books.

B．They're their

C．The books are yours

D．They are on the desk.

Whose book are these?

________.

[　　]

A．They're books.

B．They're their

C．The books are yours

D．They are on the desk.

　　My friend Alice decided to be a nurse __1__ she was four years old. She always wanted to play” doctors and nurses” with other children. When she left school last year, she still wanted to be a __2__. One day she saw an advertisement in the newspaper: DO YOU WANT TO HELP PEOPLE? STUDY NURSING. Send this form to us for more information（情况）. Alice 3 the table with her name and address. She cut it out and __4__ it that day.

　　Later September she started her studies in a big __5__ in Richmond. She had to study very hard. She went to classes every day and studied late at night. She __6__ went to bed until twelve o'clock. Then a really important day came: her first day in a ward（病房）. At last she was really helping __7__ instead of just sitting in classes or learning from books. At first, student nurses have to do all kinds of work in the ward. They help to serve（端）meals or wash the patients. They also keep the ward tidy and make the __8__. They can't give injections（打针）or help the doctors.

　　One of Mice's jobs was in the ward of old people. She was told to clean all patients' false（假的）teeth. She asked each patient if he had any false __9__. She brought all the teeth together and took them to the washing room. Instead of cleaning each of teeth one by one, she put them all in to one big plate.

　　“It'll be quicker this way,” She said to herself.” Then I can give back everyone' s teeth !”Alice stood in the middle of the ward with her big plate of teeth. She had no idea __10__ teeth these are. The problem is how the old men could find their own teeth.