Question

It is by no means clear ________ the president can do to end the strike.(2012·新课标全国，24)

It is by no means clear ________ the president can do to end the strike.(2012·新课标全国，24) A．how B．which C．that D．what

Answer 1

D 解析　it是形式主语，空格后是一个主语从句，从句中的谓语动词do缺少宾语，此处所填单词既要引导主语从句，又在从句中作宾语，四个选项中有此功能的只有what。句意为：总统能采取什么措施来结束这场罢工根本不为人所知。