[ Grammar ]
Kevin has been studying ______ over an hour.
A. since
B. for
Select your answer:

Random Topics:
AnalogyThe First Conditional (if/unless)Linking Words and ConjunctionConjunctions & PrepositionsVerbs, Tenses, and VocabularyVerb Tenses and ModalsGrammar - must & have toCan vs be able toConjunctions, Interjections and DeterminersModal VerbOther quiz:
Everyday vs. Every Day › ViewIt’s an … item under $100 that everyone needs at home.
a. everyday
b. every day
Contrast Linking Words › View
_____ earning a low salary, Iqbal gave money to his parents.
A. In spite of
B. Although
