I was about to give up the project ______ it hit me_____ I could work with my roommates. That’s to say, I can turn to them for help.A.that; whetherB.that; whenC.when; howD.when; that
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D解析考查固定句型和形式主语句。第一空是固定句型Be about to do sth when…正要做某事在这时…;第二空是形式主语句，it是形式主语，that I could work with my roommates是真正的主语。