[ Past Perfect or Past Perfect Continuous ]
When they received the message, they ________ for half an hour.
A. had been studying
B. had studied
C. had study
Select your answer:
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Grammar-Translation MethodSuperlative AdjectivesPhrase vs ClauseContinuous TensesSimple Present and Present ContinuousConditional Sentences Type 0, 1 and 2Modal Verbs and ConjunctionsNoun and Modal VerbsAdjectives & AdverbsComplex SentencesOther quiz:
Vocabulary › View_________ send information from the body to the brain.
A. Neurons
B. Cells
C. Reflexes
Coordinating Conjunction › View
I do not know her email address _________ her mobile number.
A. for
B. and
C. nor
D. but