9.―Whathasmadehimupsetrecently?―alonetofaceatroublesomecase.A.LeftB.BeingleftC.HavingleftD.Toleave

Question

9. ―What has made him upset recently?

―    alone to face a troublesome case.

A. Left         B. Being left

C. Having left    D. To leave

Answer 1

9.    B考査非谓语动词。句意："什么让他最近感到不安？""被单独留下面对棘手的事情。"因为问句是对主语的提问，所以回答的是主语的内容，用动名词作主语，he和leave之间是被，关系，用动名词的被动形式作主语，答语是简略回答，完整形式是：Being left alone to face a troublesome case has madehim upset recently. 故选B。