题目内容：

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从1-15各题所给的A、B、C、D项中选出最佳选项，并在答题卡上将该项涂黑。

In a far-away place, there was a village. The village was____ in potatoes than anywhere else in the country. At the end of every growing season, ______potatoes were dug out of the ground, and readied for market. In each home, men and women would________divide the potatoes into three groups, large, medium and small.

One year, there was a young man______received his share of the potatoes. As the other villagers_______, he walked around the village laughing and talking.______villagers thought he was lazy, and they worried that this man would never get__________potatoes ready in time. When it was time for the villagers________to market, they were greatly surprised to find that the man’s potatoes_____perfectly into three groups.

After _______the man how he did it, they understood he was not lazy, ______very clever. He had put all his potatoes in a cart and pulled it along the village’s rough dirt road. As the cart moved up and down over the road, the potatoes moved_______. The small potatoes moved to the bottom, the larger potatoes rose to the top and the medium potatoes rested____ the middle.

Life______like this too. The rough roads we travel along can also_____us.

1.A. rich    B. richer        C. richest    D. more rich

2.A. thousand with  B. thousands with   C. thousand of   D. thousands of

3.A. busily   B. busy     C. more busily   D. busier

4.A. who    B. which    C. what     D. whose

5.A. work    B. was working   C. were working   D. works

6.A. A    B. An     C. The     D. /

7.A. he    B. him     C. himself    D. his

8.A. go    B. going    C. to go     D. went

9.A. are divided  B. were divided   C. are dividing   D. divided

10.A. asking   B. asked    C. ask     D. asks

11.A. so    B. and     C. or     D. but

12.A. too   B. also     C. either        D. neither

13.A. on    B. in     C. with     D. by

14.A. has   B. are     C. were     D. is

15.A. to help   B. help     C. helps     D. helped