[ Stative Verbs and Tenses ]
Use the stative verb ‘to understand’ in a sentence in the present perfect continuous tense.
A. I have been understanding the concept for hours.
B. She has been understanding the instructions since yesterday.
C. They have been understanding the task all day.
D. I have been understanding the lesson for a few minutes.

Random Topics:
Simple Present vs Present ProgresiveComparatives and SuperlativesFirst ConditionalsModals and AdviceProgressive TensesSubordinating and Coordinating ConjunctionsReported Speech and Reporting VerbsProverbsFamily Vocabulary and GrammarVocabullary TestOther quiz:
Modal Verbs › ViewYou ………. pay to use the library. It’s free.
A. don’t have to
B. must
C. should
D. ought to
Grammar and Vocabulary › View
It is vital that you…… treat yourself well.
A. Should
B. Will
C. Would