[ Conjunction ]
I am very tired _____________ I have been working all day.
A. so
B. because
C. therefore

Random Topics:
Past and Present ContinuousPrepositionPresent/Past/Past ParticpleEssential and Nonessential ClausesNouns FormationExpressing Obligation and ModalsGrammar RulesModal Auxiliary VerbsPhrasal VerbsConjunctions and CommasOther quiz:
Linking Verb › ViewPlease choose the correct linking verb in the sentence.
Mrs. Myers and Mr. Myers were glad.
A. And
B. Were
C. Glad
D. No linking verb
Grammar › View
Which of the following is correctly capitalized?
A. My favorite novel is The handmaid’s tale.
B. My favorite novel is The Handmaid’s Tale.
Gerunds and Infinitives › ViewI expect ______ (graduate) next year.
A. graduating
B. to graduate
Articles › View
This is my uncle Phil. He’s ____ teacher and he lives in London.
A. a
B. an
C. the
D. –