12. Muscle headaches, which start in the muscles in the neck or forehead, _______ tension.
(A) cause to
(B) cause from
(C) are caused by
(D) the cause of
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統計: A(24), B(33), C(213), D(5), E(0) #888157
統計: A(24), B(33), C(213), D(5), E(0) #888157