The group of the aged are close companions, and many of ______ have known each other for decades.

I.选择填空（Vocabulary and structure）(共20小题，计20分)
A）从A、B、C、D四个选项中，选出可以填入空白处的最佳答案。（答案涂在答题纸上）
—Do you know Mr. Smith?
—Yes. He's a strange man. We found ________ difficult to work with him.
A. us               B. it             C. him            D. you

---Tom won an award again.
---   is no accident that he is so successful. He is always working hard.

The man didn’t choose __ of the suits and went away without looking at ___ third one.

Our city has changed a lot; who can tell what it will be like in ___ ten years?

. Some animals are in danger, and the scientists are doing ___ they can ___ them.

. Intelligence is to some extent _____ one is born with

He is over sixty, but doesn’t look _____.

She asked if any of the passengers knew _____ about machines or at least how to drive a car.

_____ of the family isn’t willing to give up the chance to watch the exciting match.