[ Verb Tenses ]
Identify the tense of the verb in the sentence: ‘They have been studying for hours.’
A. Future perfect tense
B. Past continuous tense
C. Present simple tense
D. Present perfect continuous tense

Random Topics:
Preposition and Word FormGrammar - may & mightSentence Types and ConjunctionsDegrees of ComparisonPast Perfect & Past SimplePast Simple & Past PerfectIF CLAUSEGerunds as Objects of PrepositionsModals for DeductionAdverbial ClausesOther quiz:
Prepositions › ViewRead ______ line 5 _____ line 20 ______ page 31.
A. From; to; on
B. From; until; in
C. Of; to; at
D. On; as far as; by
Conditionals › View
I didn’t know that you were there because I’m not a psychic. I _____ that you were there if I was a psychic.
A. would have known
B. had known
C. would know
D. knew
Grammar › ViewA: _____________ is from Taipei to Kaohsiung?
B: It is 186 km.
A. How often
B. How far
C. How long
D. How many
Grammar › View
Determine whether each sentence uses punctuation correctly.
“Well, I’m not quite sure—” Jackson muttered.
A. Correct
B. Incorrect
