阿摩線上測驗
19. _______you have any problems with the machine, consult Mr. Pau! N. Hiatt, who is one of the most experienced mechanics in our factory.
(A) Had
(B) Would
(C) Should
(D) Were
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統計： A(11), B(21), C(8), D(9), E(0) #2717398
統計： A(11), B(21), C(8), D(9), E(0) #2717398
