only take such clothes____really necessary

only take such clothes____really necessaryAas where
B.as they are
C.as they were
Das are

only take such clothes as are really necessary.
根据真正所需取这样的衣服

clothes是不可数名词，前面是不是还有其他条件来修饰 necessary

d。先行词含有such，定语从句引导词只能用关系代词as，由于as在从句中作主语，因此不能再用they。