[ Grammar ]
Select the correct sentence.
A. I failed the test because I have not been studying hard.
B. I failed the test because I have been not studying hard.
C. I failed the test because I has not been studying hard.
D. I failed the test because I have been not studying hard.

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How much or How many?Grammar: Defining Relative ClausesModals and Past TensesPresent TenseTransitive or Intransitive VerbsPast Tense and NeutralConditionals Type IPassive Voice of TensesQuantifiers, Countable and Uncountable NounsLinking Verbs & Helping VerbsOther quiz:
Tenses › ViewChange the following to present continuous: ‘She sings.’
A. She was singing.
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D. She is singing.
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. This week, I _______ a new project for my work, and it’s taking up all my time.
A. am working on
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D. have worked on