Relier Pairs Use of English Part 4 - ShouldVersion en ligne Match the pairs with the same meanings. par Cintia Lazarte 1 X shouldn’t do A without doing Y first. 2 If you don´t do X you shouldn´t do Y. 3 Y should be turned off at all times during Z. 4 I should have done it. 5 I don´t think they should abolish Y. Don´t do Y unless you do X. It was a mistake not to do it. They shouldn´t do away with Y. Under no circumstances should Y be kept turned on during Z. X must never do A without doing Y first.