第一题:选最后一个“of,thought it over”,此题关键是第二空,意思是:我反复考虑之后发现它很有用."think something over",意思是“反复的考虑,思索”
第二题:选A,"be sure of something"意思是"对.有信心"
第一题:选最后一个“of,thought it over”,此题关键是第二空,意思是:我反复考虑之后发现它很有用."think something over",意思是“反复的考虑,思索”
第二题:选A,"be sure of something"意思是"对.有信心"