题目内容
1.A person who______ _____ ______(遵守诺言) is always welcome in the group.
2.When seeing the frightening bear, the little boy________ _____ _______.(屏住呼吸)
3.Who is ______ _____ ______ (因……受责备)starting the fire?
4._______ _____ ______ (暴露在)nuclear radiation, even for a short time, may produce variants(变异体)of genes in human bodies.
5.I think teachers need to______ _____ ______students.(对…严格)
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