1.He is ( ) than the other boys in his class.

1.选C,用taller比较级表示最高级.翻译：他比班里其他男生都高＝他是班里最高的 （he is the tallest in his class）2.选B,关键词not until,看到它在句首,主句要半倒装（助动词＋主语＋动词结构）did i realize,翻译：直到开始工作,我才意识到我浪费了多少时间.等于：I did not realized how much time i had wasted till i began to work.否定转移,not until 结构～