[ Tenses ]
I needed to know what….to my dog.
A. had happened
B. had happening
C. has happened
D. was happened

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Tenses › ViewForm a sentence using the verb ‘study’ in present perfect continuous tense.
A. I have been studying for my exams.
B. I had been studying for my exams
C. I am studying for my exams
D. I will be studying for my exams
Tenses › View
Which tense is used to describe a general truth or fact that is always true?
A. Present Continuous
B. Present Perfect
C. Present Simple
D. Past Perfect