6. Do you know how tall ______?
A. is it
B. they are
C. he's
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7.________know if they fixed his computer?
A. Do you
B. Have you
8. Do you know _______he plays basketball?
A. if
B. will
C. does
9. Can you tell me ________you were born?
A. if
B. were
C. where
10. Do you know when the party ______ ?
A. start
B. starting
C. starts