以下是Filter代码段：public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {chain.doFilter(request, response);}其中chain.doFilter(request, response);代码的作用是什么？
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There is ____ bridge over the river.
A. a stone old fine
B. an old stone fine
C. a fine old stone
D. an old fine stone
It's surprising that ____ little children could do ____ much work.
A. such; so
B. so; such
C. such; such
D. so; so
How ____ the song sounds!
A. pleasure
B. pleased
C. pleasant
D. pleasantly
No sooner had he gone to bed than he fell ____
A. sleep
B. asleep
C. slept
D. sleepily
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