阿摩線上測驗
30. Teaching is a challenging job, _____ good communication skills and a lot of patience.
(A) requiring
(B) requires
(C) required
(D) to require
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統計： A(1960), B(446), C(453), D(135), E(0) #2043002
統計： A(1960), B(446), C(453), D(135), E(0) #2043002
