Part III Vocabulary (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 answer that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the centre. 【題組】49. Because of a ________ engagement, Lora couldn’t attend my birthday party last Saturday.
(A)) pioneer
(B)) premature
(C)) prior
(D)) past