3、all,both （1）___ of my parents work in the hospital （2）there are many boys under

题目

3、all,both （1）___ of my parents work in the hospital （2）there are many boys under
the big tree.____ of them are playing games
（3）his legs were___ injured(受伤) in the traffic accident(交通事故)

答案

1. Both
2. All
3. both

两个都用 both
三个或三个以上用 all

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