用括号里的词的适当形式填空。

1. Since I was born, my family _____________ (live) in this village.

2. During the past five years, great changes ______________(take) place in our hometown.

3. I saw a dog ______________ (lie) on the ground at that time.

4. -           she ____________ (finish) reading the storybook yet?

    -No. She _____________(finish)it in 2 days.

5. Neither Jane nor Tom _____________(see) it so far.

6. You will have no trouble ______________( find) rice, noodles or dumplings.

7. The flowers start             (come)out in spring.

一个大小均匀的长管子，两端有口，里面有4个白球和4个黑球，球的直径、两端开口的直径等于管子的内径。现在白球和黑球的排列是yyyyhhhh，要求不取出任何一个球，使得排列为hhyyyyhh。