题目内容：

    A grandma once lived in a small town. She felt very lonely, ______ she planted a sweet potato(红薯) in her front yard. She ______ it every day. And the sweet potato grew ______. “It's time to pull up the sweet potato. Hey, Doggy, come and help me,” the grandma called her doggy. “I will be ______ to help,” the doggy said. The grandma and the doggy ______ to pull out the sweet potato together, but it would not______. A little chicken and her baby chicks all______in at the back of the line. They kept pulling, and______face turned red. While the______and her friends pulled the top of the sweet potato, a mouse and his friends were pulling the bottom of the sweet potato______! How funny!

1.A.or B.but C.so D.and

2.A.rode B.knew C.watered D.walked

3.A.smaller and smaller B.bigger and bigger C.shorter and shorter              D.lower and lower

4.A.unhappy B.dangerous C.safe D.happy

5.A.tried B.finished C.rushed D.did

6.A.leave B.move C.die D.walk

7.A.cut B.started C.joined D.left

8.A.nobody's B.everyone's C.no one's D.someone's

9.A.grandma B.grandpa C.doggy D.son

10.A.on B.at C.down D.in