[ Grammar - used to ]
In today’s world, people are lazier, but in the past they ______ harder.
A. use to work
B. used to work
C. didn’t use to work
D. didn’t used to work

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Conjunctions in Complex SentencesPresent and Past Perfect TensesPresent Simple vs Past SimpleSimple Present Tense with Adverb of FrequencyLexico and GrammarFormal & Informal WordsVerb TensesSuperlative & Comparative AdverbsModal Verb, Passive VoiceGrammar and VocabularyOther quiz:
Tenses › ViewShe reads books every day.
A. Present Simple:
B. Present Continuous:
C. Present Perfect:
D. Present Perfect Continuous
Noun, Quantifiers and Suffixes › View
Look! There are 20 __________ in the park!
A. child
B. children
C. childs
D. childes