[ Subject Verb Agreement and Coordinating Conjunctions ]
Select the correct auxiliary verb to complete the sentence: “They ______ been studying for hours.”
A. has
B. have
C. is
D. was

Random Topics:
GerundsRelative ClausesWh- Questions Present Simple TenseParallel Structure or Combining SentencesTo Infinitive or GerundGrammar for IELTSPrepositions - ConjunctionsConjunctionGrammar and PrepositionArticles & Compound NounsOther quiz:
Correlative Conjunction › ViewNot only the primary data ________ the secondary sources provide valuable insights.
A. or
B. nor
C. and
D. but also
Modal Auxiliary Verbs › View
What is the primary use of the modal ‘can’?
A. Expressing possibility
B. Expressing certainty
C. Expressing obligation
D. Expressing volition