1 He says that technology makes it easier than ever for governments to identify people
第一个句子government后面括号里为什么不用identify?
2,A man who refused to give his name dived into the river yesterday morning (to save)a nine-year-old boy .括号中为什么不用saved
3.If you want to avoid (being charged)for late baggage,you'd batter chack in half an hour earlier.括号里为什么不用charging