Have you ever been to Xiangyang?—Yes. It is an ancient beautiful city ______ has more than 2800 years’ history.

When the teacher ______ how to do the experiment, the bell rang.

As more and more restaurants join “clear your plate” campaign, people are encouraged _______ food any more.

We will never forget those happiest days _______ we spent on the summer camp.

Do you like milk or coffee? — I prefer milk_____coffee. [ ]