Question

She ________ a model before she _______ a superstar.

A. have been, became B. had been, become

C. had been, became D. has been, become

 

Answer 1

C

【解析】

试题分析：句意：在他成为一个超级明星之前他是一个模特。因为在含有before的主从复合句中，一般在从句中使用一般过去时，主句中使用过去完成时有时，也可以在从句中用过去完成时，主句中用一般过去时，这样就可使描述更为生动。故选C.

考点：考查时态的用法。