They waited and waited, and_____ he came back.A．at onceB Wap版

试题详情及答案解析

They waited and waited, and_____ he came back.

A．at once	B．at first
C．at the end	D．at last

答案：D

试题分析：A. at once立刻，马上；B. at first首先；D. at last最后；句意：他们等了又等，最后他回来了。结合句意，故选D
考点：考查短语的辨析。