【题目】Mary is good at computer, so she was very __________ using computers when she was interviewed by the employer.
A. satisfied with
B. pleased with
C. confident about
D. tired of
在线课程【答案】C
【解析】前面说“玛丽擅长电脑”，后面说“当她在接受面试的时候……”，故可以推断空格处填入的词构成的句意应为“她对使用电脑 非常有信心”，故用be confident about sth. 短语。