---What’s wrong with you, Mr. Keller? --- I’ve had a very bad headache for two d

题型：不详难度：来源：

---What’s wrong with you, Mr. Keller?
--- I’ve had a very bad headache for two days. At first, I ______ I caught a cold, but the medicine ______.

A．thought, hasn’t worked	B．had thought, didn’t work
C．thought, hadn’t worked	D．have thought, hasn’t worked

答案

B

解析

本题考查时态。根据句意可知我原以为我得感冒了，故用过去完成时，药没起作用为过去的事实，故用一般过去时。句意：——Keller先生，你怎么啦？——我头疼两天了。起初，我原以为我患感冒了，但服药没有效。