C. 请根据句意从方框中选择合适的动词，并用其适当时态填空，使句子通顺。

【小题1】Don’t be late again, Tom. Otherwise I ________ you.
【小题2】—What do you think of my suggestion?
—Sorry. What’s that? I _______ to my favourite song. 
【小题3】Lucy ________ to school on her own when she was in the middle school.
【小题4】I feel energetic again because I _________ a rest. I can devote myself to this work now.
【小题5】We are told that sound __________ through air at a speed of about 340 metres per second.

This work is very difficult. It needs great _____.

C. 请根据句意从方框中选择合适的动词，并用其适当时态填空，使句子通顺。

1.Don’t be late again, Tom. Otherwise I ________ you.

2.—What do you think of my suggestion?

   —Sorry. What’s that? I _______ to my favourite song. 

3.Lucy ________ to school on her own when she was in the middle school.

4.I feel energetic again because I _________ a rest. I can devote myself to this work now.

5.We are told that sound __________ through air at a speed of about 340 metres per second.

In some science fiction movies, evil robots refuse to die, no matter how hard people fight back.
Now science fiction has become science fact. For the first time, scientists have made a robot that can take a beating (挨打) and keep on going. Scientists from Cornell University made the robot, which looks like a spider with four legs.
Until now, even the most advanced (先进的) robot was almost certain to break down when it was damaged. That is because its computer inside simply doesn’t know how to make the machine work after its shape has changed.
To deal with this problem, the scientists put eight motors (发动机) and two sensors (传感器) that read how the machine is working. They all give signals to the machine’s software. Using this information, the computer can then figure out the machine’s shape at any moment.
The new technology is a big advance in robot-making, scientists say, and it’s far from scary. It may someday help scientists create better artificial (假的) arms and legs and give new freedom to people who lose them. It might also help scientists understand how people and animals figure out their own sense of place in space.
“It has been difficult to design robots that can work well when the environment changes or when it’s damaged,” says Olaf Sporns of Indiana University in US. “With this work, we are nearer to solving this problem.”

【小题1】Why do robots easily break down when they are damaged?

This work is _________difficult for us. We need _________people.