[ Grammar & Vocabulary ]
Turning off appliances when not in use is a habit that saves energy, ______ makes a big difference over time.
A. which
B. where
C. what
D. that
Select your answer:
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Grammar › ViewI felt bored __ I was listening to the presentation.
A. when
B. while
Grammar › View
Where is the White House located?
A. Washington state
B. New York City
C. Washington D.C.
D. Los Angeles