-Have you heard that Peter rather than his parents to Singapore?-- Really? No wond

问题补充：

---- Have you heard that Peter rather than his parents to Singapore?

---- Really? No wonder I haven’t seen her.

A. has been

B. has gone

C. have gone

D. have been

答案：

A. has been

(答案→)B. has gone

C. have gone

D. have been

解析：考察完成时态。句意：你听说是彼得而不是他的父母去了新加坡吗？——真的吗？怪不得我从没见过她。可知上文从句描述的是已经发生的动作，表示的是瞬间的动作，主语是皮特，第三人称单数，故助动词用has，选B。