60. Which of the following group all belongs to the same category (范畴)? _____
—The weather here in summer is so changeable. Please take an umbrella when you go out. —________.
Our teacher looked here and there on the playground ________looking for something.
After the earthquake,the poor girl was found ________under the ruins of a church.
—Jack fell off the ladder yesterday,but he is all right now. —What a lucky dog! He________ himself badly.
The children, _____ had played the whole day long, were worn out.