4. The vacuum cleaner is not working. Let’s send it back to the ______ to have it inspected and repaired.
(A) lecturer
(B) publisher
(C) researcher
(D) manufacturer
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統計: A(11), B(16), C(19), D(146), E(0) #3362482
統計: A(11), B(16), C(19), D(146), E(0) #3362482