must/mustn't, should/shouldn't 1 * Circle the correct words. 1 We use must, mustn't, should and shouldn't + verb / to + verb. 2 We use must / mustn't to talk about obligation. 3 We use must / mustn't to talk about prohibition. 4 We use should and shouldn't to give advice/ talk about obligation and prohibition.
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Ответ:
1. + verb
2. must
3. mustn't
4. advice