Completar frases Modals: ability or obligation2Versión en línea practice these modal verbs por Alvar Garcia Soriano 1 have mustn't don't mustn't have have don't don't to doesn't mustn't to to to have mustn't Put in ? mustn't' or ? don't / doesn't have to' : We have a lot of work tomorrow . You be late . You tell anyone what I just told you . It's a secret . The museum is free . You pay to get in . Children tell lies . It's very disgusting John's a millionaire . He go to work . I do my washing , because my mother does it for me . We run . We've a lot of time . You smoke inside the school .
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