Question

【题目】______ in thought, he failed to realize his mother’s approach.

A.LosingB.Being lostC.LostD.To be lost

Answer 1

【答案】C

【解析】

考查非谓语动词。句意：他陷入沉思，没有意识到母亲的到来。短语lost in thought“沉浸在思考中”，本句中lost做状语，故选C。