Relier Pairs Modal Verbs:Can - could - must - should - have toVersion en ligne Match the modal with the use. par MARIA DEL PRAD SOBRINO DE TORO 1 Mustn't 2 Shouldn't 3 Don't have to 4 Couldn't 5 Can 6 Could 7 Must 8 Have to 9 Can't 10 Should Present possibility Obligation Prohibition Not recommended Obligation (not authority) Not obligated Past possibility Not possible in the past Recommendation Not possible in the present