1、B."it's my fault"固定词组表“这是我的错”.
A."mistake"稍微书面一点,一般搭配动词如“i made a mistake”.如果用"it's my mistake"语法上并没有错,只是第一题口语语境中不太自然,因为"no way"表达了明显的感情色彩.
C.“wrong”可以做名词,但一般见于文学类语言,修饰性重,中高考不会考这样用法的.口语中"wrong"一般作为形容词.
D.“failure”意为“失败”,意义不符.
2、A.“there is no doubt”意为“毫无疑问”
B.There is no point 意为“毫无意义”
C.it is no use 意为“一点用都没有”
D.It is no wonder 意为“难怪,一点都不奇怪”
原句意为“难怪他老在英语演讲比赛中摘金,他有这天赋,且他很认真.”根据语意可判断.
3、The lecture （given by MISS WANG） dealt with the trouble many teenagers have ( )
between right and wrong.
括号中为定语从句."dealt with"为主语"lecture"的谓语.
其实是考了"sb has/have trouble doing"这个结构.
还原即为“many teenagers have the trouble distinguishing between right and wrong”,意为“青少年不能明确分辨正确与错误”