Question

 He told us that he was tired and thirsty because he ________ in the desert for days.

A．walked	B．has walked
C．had walked	D．would walk

Answer 1

C

试题分析：句意：他告诉我们他又渴又累因为他在沙漠中行走了好几天。根据动作发生的时间可知在沙漠中行走发生在他告诉我之前，他告诉我发生在过去，所以在沙漠中行走发生在过去的过去，故用过去完成时态，故选C。