15. The host won't be pleased if you don't go to the party 　　 in Switzerland. 　　 A. in time B. at the same time 　　 C. on time D. at times

1. In Switzerland we are the c ______of clocks and watches. -

2. There's nothing in the drawer. It's e ______

3. I think it's i ______to keep others waiting.

4. In the United States they're expected to s______ hands.

6. When visiting a foreign country, it's helpful to learn as many of the c ______　 as possible.

7. It's not a good manner to s ______your chopsticks into your food.

8. My biggest c______ is learning how to behave at the dinner table.

9. The students g______ the teacher every day.

10.　 People in Japan and people in America b______　 differently at the dinner table.