27. Attending the course will ______ Vivian's abilities and prepare her for the job.
(A) strength
(B) strengthen
(C) stronger
(D) strengthening
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統計: A(71), B(99), C(25), D(13), E(0) #3887981
統計: A(71), B(99), C(25), D(13), E(0) #3887981