【2014年甘肃省兰州市中考】She to an English program while her parents TV.
They stayed in Beijing for a few days and visited some ________.
If you have headaches often, you need _______ .
He wasn’t _____ to understand the questions.
The strong young man can swim ______ the river.
The boss(老板) makes the workers _____ these machines(机器) for ten hours a day.