Relier Pairs B1+ - U5 - GrammarVersion en ligne Match the sentences with the functions of the modals. par Rocío Oviedo 1 They COULD HAVE joined us in Vietnam, but they decided to stay longer in Laos. 2 I couldn't find my keys and I thought I MIGHT HAVE lost them in the park. 3 You NEEDN'T HAVE worried about giving the presentation. You were really good! 4 I SHOULD HAVE asked about the tickets. I think it's too late now. 5 He MUST HAVE done really well in the interview for them to offer him the job so quickly. criticism of past actions certainty about the past past possibility past possibility lack of necessity or obligation in the past