1) could + have = ? a) could've b) could of 2) would + have = ? a) would of b) would've 3) should + have = ? a) should've b) should of 4) I _____ gone to the party, but I was too tired. a) should've b) should of 5) He _____ won the race, if he had trained more often. a) could of b) could've 6) It ____ been better to have asked him. a) would've b) would of 7) You _____ been here, and I _____ been so happy. a) should of / would of b) should've / would've 8) 'should of', 'could of' and 'would of' are ... a) never correct b) sometimes OK to use

Could've Would've Should've

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