... _ (have) the accident 1 .would have bought should have been could have stayed should have told /would certainly have lent wouldn’t have asked shouldn’t have been driving 7a) couldn’t have stolen ... 7b) should have taken/wouldn’t have been stolen could have ordered should have told (the right thing to do) or /could have told (she had the opportunity) 10 should have been (certainty) /could have ... Exercises - intermediate/upper-intermediate level Choose either would have, could have, should have + past participle’ to complete these sentences using, when necessary, the ‘ing’...