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助動詞
単語
100
（ ）に入る適切な語を選びなさい。 Students ( ) clean the classroom. 1 don't have to 2 has to 3 mustn't 4 have to
Students ( have to ) clean the classroom. 生徒は教室をそうじしなくてはならない。
100
passport
外国に入るための物は？