Tom is an old man of eighty. After dinner, he 小题1:      _ taking a walk in the street. And he goes to bed at nine o'clock every evening.                                                                                            

But yesterday evening, Tom 小题2:       home by a police car. A policeman helped

Tom get out of the car. The policeman said to Tom's wife, "This old gentleman couldn't find his way in the street. He asked me to take him home in the car.

After the policeman 小题3:     Tom's wife said, "Tom, you go to the street every evening. You 小题4:        the habit for twenty years. But this evening you couldn't find the way. What's the matter?"

Tom smiled like a child and said, "I couldn't find my way? I just didn't want 小题5:             home."

测定一个抹灰小组12人，工作6小时(八小时工作制)，完成抹灰54平方米，计算其产量定额为()平方米/工日。

A.6.5

B.9

C.6

D.4.5