题目内容

用所给单词的适当形式填空。
1. Don't spend much energy _____ (make) others happy.
2. Why do many parents keep their children from _____ (go) out after school ?
3. It's necessary _____ ( keep) our classroom tidy and clean.
4. He pretended _____ (is) friendly with me.    .
5. I thanked them for their _____ ( kind) they showed me.
l. making  2. going   3. to keep  4. to be   5. kindness
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