单词拼写
C______with other countries was difficult during the telephone and postal strike.
The weather v______from year to year with the pollution being more and more serious.
—What's the matter?
—The bike hit a rock and turned over. Fortunately, he was s______hurt.
It's none of other's business, so don't i______ other people in your trouble.
Be careful about the news on red fire ants—take measures to prevent the possible s______of them.