根据短文的意思，从下面的表中选择适当的动词，用正确的形式填入空格。有的地方要加上助动词或情态动词。每个动词只准用一次。对原文不得作任何改动 (本题共10分，每个空格1分)

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When he _ (1) _ a little boy, hristopher Cockerell once watched his mother turning the wheel of her sewing-machine with her hand.

“Wouldn’t it work quicker if a machine turned the wheel for you?” he asked.

“I suppose it would,” said his mother, without _ (2) _ him any attention.

Christopher knew she always had a lot of work, and he wanted _ (3) _ her. Up in his bedroom there was a toy steam-engine which his father _ (4) _ him as a gift. “I shall make better use of it, “ little Christopher said to himself. So, when his mother _ (5) _ (not) her sewing-machine, he fixed the toy steam-engine onto it. When the job _ (6) _ , he was quite pleased, _ (7) _ his mother would like it.

“Very clever, “his mother said, when she saw it. Then she sat down and went on turning the wheel by hand. “I _ (8) _ like this for too many years, “ she explained.

This taught Christopher Cockerell the lesson that anyone who _ (9) _ to improve anything has to learn:

Many people _ (10) _ (not) new ideas.