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。

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