When were your parents listening to Rolling Stones?
A. When they were young
B. When they are young
C. When they will be young
D. When they have been young

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Grammar Clauses › ViewThe word “because” serves as what type of conjunction as used in the following sentence?
The audience became very informed about ocean pollution because the researcher used friendly language and accurate information.
_
A. subordinating
B. coordinating
Grammar › View
What is the best definition of an infinitive?
A. A verb phrase with an -ing word
B. A verb that ends in -ing and functions as a noun
C. A combination of helping verbs and other words
D. The word “to” plus a verb
Grammar › ViewYou […] smoke. It’s dangerous for the health.
A. wouldn’t
B. shouldn’t
C. don’t have to
D. couldn’t
Articles › View
He will be back in —— hour.
A. a
B. an
C. the
