Grammar: must, mustn't and needn''t / don't have to

Complete the sentence The bus leaves at 9 a.m. exactly, so you be late.

7/20

Complete the sentence with “mustn't” or “don't / doesn't have to” (Hoàn thành câu với "mustn’t" hoặc "don't / doesn't have to")

The bus leaves at 9 a.m. exactly, so you … be late.

0/3000 ký tự
Giải thích

mustn’t

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