Part III Vocabulary and Structure (20 minutes)
Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A, B, C and D. Choose the ONE that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center. 【題組】67. All flights ________ because of the terrible weather, they had to go there by train.
(A)) having been canceled
(B)) had been canceled
(C)) having canceled
(D)) were canceled
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