is surprising to us is that Tom, for English was once boring, can speak English fluently as though he were a native speaker.
A. What; whom
B. What; whose
C. It; whose
D. As; whom
网友回答
(答案→)A. What; whom
B. What; whose
C. It; whose
D. As; whom
解析：考查主语从句的定语从句。本题第一空是what引导的主语从句what is surprising to us,what在句中做主语。第二空是一个定语从句，whom指代Tom作为介词for的宾语。句意：让我们惊讶的是Tom能够讲流利的英语就好像是他的母语一样。，对他来说英语曾经很乏味。故A正确。