never before__i felt so serious的语法填空答:(2)由倒装句式判断,是填构成倒装的条件的only, so, neither, nor, never, hardly, seldom, not, until, had等,还是填do, does, did等.如:[例12] ___with hard work can you expect to get pay rise.解析:由can you expect to…可知,这是倒装句,根据构成倒装的条件可知,应填副词only,因为“only ...