---I hear Liza and her husband have flown to Hawaii for their honeymoon---Oh how nice! D

问题补充：

---I hear Liza and her husband have flown to Hawaii for their honeymoon．

---Oh, how nice! Do you know when they?

A. were leaving

B. had left

C. have left

D. left

答案：

A. were leaving

B. had left

C. have left

(答案→)D. left

解析：考查时态。本题用一般过去时陈述的过去的事实。句意：——我听说丽莎和她的丈夫飞往夏威夷度蜜月。——哦，真好！你知道他们什么时候离开的。故D正确。