[ Relative Clauses ]
We have obligation to our customers to make sure they know ______________________ to use our products correctly.
A. why
B. because
C. which
D. how
Select your answer:

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Articles › ViewHe predicted that one day man would fly as high as ______ stars.
A. –
B. a
C. an
D. the
TAG Questions › View
Clowns are very often frightening to look at, __________
A. don’t they?
B. are they?
C. aren’t they?
D. doesn’t they?
