Tom is unaware of his mistake.A.is sure aboutB. unknownC Wap版

试题详情及答案解析: Tomis unaware ofhis mistake.
A.is sure about
B. unknown
C. doesn’t realize; 答案：C; 试题分析：句意：汤姆没有意识到他的错误。is unaware of没有意识到；is sure about对……有把握，确信；unknown未知数；doesn’t realize没有意识到。根据题意，故选C。
考点：考查短语辨析。