(Viên chức Mầm non) bài tập tiếng Anh theo chủ đề có đáp án - Unit 10
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Of course the first thing I did was to call the police and I mustn’t / didn’t have to wait very long for them to get there.

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Of course the first thing I did was to call the police and I mustn’t / didn’t have to wait very long for them to get there.

Giải thích

didn‘t have to