[ Vocabulary ]
when the forces exerted on opposite sides of an object are not equal in strength
A. rest
B. magnetic force
C. unbalanced
D. speed

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Where did she meet her brother?
A. Do you have any idea where did she meet her brother?
B. Do you have any idea where she met her brother?
C. Do you have any idea where she meet her brother?
D. Do you have any idea whether she met her brother?
