Tourists ______ pack sunscreen because it is very sunny., must, should , have to, shouldn´t, Tourists ______ bring comfortable shoes for walking., must, have to , should, mustn't, Tourists______ carry identification at all times., should, have to, must, shouldn't, You are visiting Cuenca. You ______ visit the historic center., have to, must, mustn't, should, Tourists ______ follow the guide during the tour., have to, must, should, shouldn't, At the museum, visitors ______ be quiet., should, have to, must.

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