Question

【題目】Professor James will give us a lecture on the Western culture, but when and where ____ yet.

【選項(xiàng)】

A. hasn’t been decided

B. haven’t decided

C. isn’t being decided

D. aren’t decided

Answer 1

【答案】A

【解析】根據(jù)句意, 此處應(yīng)用被動語態(tài), 不用主動語態(tài), 故排除B；又因?yàn)?/span>when and where表示單數(shù)意義, 故排除D；再根據(jù)句末的yet可知, 最好用現(xiàn)在完成時, 故選A最佳。