题目：
—You'd better ______ work too hard like this.
—I see. You mean ______ too hard makes one tired and ill.
A．not; work
B．don't; working
C．don't; to work
D．not; working
答案：
参考答案：D
解析： You'd better(not)do sth.是常见搭配，排除B，C。mean to do打算做；mean doing意味着做。末句应该用动名词。故选D。
