a．We need ____  dictionaries．

b．I think ____  mistakes should be avoided．

A．some such，all such

B．such some，such all

C．some such，such all

D．such some，all such

此题应选A。按英语习惯，such与no，any，some，all，few，many，each，every，several，other，another，one，two等连用，通常应置于其后：

这类事现在没有了。

正：There are no such things now．

误：There are such no things now．

我见过许多那样的人。

正：I have met many such people．

误：I have met such many people．

对我来说，这样的词典有一本就够了。

正：One such dictionary is enough for me．

误：Such one dictionary is enough for me．

我希望永远不要再遇上那样的事故。

正：I hope never to meet another such accident．

误：I hope never to meet such another accident．

但是such要放在a，an之前：

我从未听说这样的事。

正：I have never heard such a thing．

误：I have never heard a such thing．