根据句意，用括号中所给词的适当形式填空。(共5小题，每小题1分，满分5分)

1.In our life, whatever we do, we should never give up no matter how many ________ we have. (difficult)

2.How ___________ the room is ! There are so many people singing in it. (noise)

3.Chocolate is usually the ____________favorite food. (child)

4.Climb up to the ___________ floor , and you can enjoy a better view.(twelve).

5.Life is __________ and we should learn to enjoy our life. (color)

In America, just as in Europe, men usually open doors for women, and women always walk ahead of men into a room or a restaurant, unless the men have to be ahead of the ladies to choose the table, to open the door of a car or do some other things like the above. On the street, men almost always walk or cross the street on the closer side of the ladies to the traffic. But if a man walks with two ladies, he should walk between them. Then if the host or hostess or both of them come in a car to get their guest for dinner, the guest should sit at the front seat and leave the back seat though there're no people sitting on it.

1.In America, men usually_________.

A. walk ahead of women       B. eat in a restaurant

C. walk behind women          D. drive a car to work

2.In the street, men __________.

A. cross the street                                 B. walk on the right side of the ladies

C. walk near the ladies                         D. walk on the closer side of the ladies to the traffic

3.If a man walks with two ladies, he should _________.

A. walk between them         B. run before them

C. follow them                 D. go away

4.If a man asks you to speak at a meeting, first you should say,"______".

A. How are you?                B. Is everyone here?

C. Ladies and gentlemen       D. How do you do?

5.If Mrs. Green invites you to her house in a car, you should________.

A. jump into the car                              B. sit at the front seat

C. sit at the back seat                                     D. drive the car