28. Last year, a fake news story about a Washington pizza restaurant went viral, _____ a gunman to open fire at the business.
(A) cause
(B) caused
(C) causing
(D) has caused
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統計: A(6), B(64), C(188), D(16), E(0) #2275134
統計: A(6), B(64), C(188), D(16), E(0) #2275134