what a UFO is —not ever.
A.that B.which
C.of which D.what
An accident happened at _______ crossroads a few metres
away from_______ bank.
A.a;a B./;a标准答案:A
本题解析:crossroads是复数形式单数用法,at a crossroads在十字路口.bank是泛指,要用不定冠词.根据bank是单数,可确定crossroads指的是一个交叉路口,而不会是在多路口有一个银行.