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