—DavidhasgonetoAustraliaonbusiness.—Really?I

问题详情：

—David has gone to Australia on business.

—Really? I ______ why he was absent from today’s meeting.

A. am wondering             B. wonder             C. was wondering      D. had wondered

【回答】

C

知识点：过去进行时及其被动式

题型：选择题