[ Present Perfect Tense ]
You ________ the train tickets yet.
A. hasn’t bought
B. hasn’t buyed
C. haven’t bought
D. haven’t buyed

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Present Tenses and VocabularyIntermediate GrammarFuture Tense VerbPresent and Past TensesTenses & PassiveParticiple - ing/ edGerund, Infinitive, Bare VerbFormal & Informal WordsGrammar PhrasesPast Narrative TensesOther quiz:
Adverbs › ViewChoose the correct form of the word in parentheses: Mandy is a………….girl. (pretty)
A. prettily
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How do you express a strong obligation with ‘must’?
A. You must + base form of the verb.
B. You must + infinitive form of the verb.
C. You must + past form of the verb.
D. You must + gerund form of the verb.