摘要：15．-Shall we go on watching the HDTV programme? It is too wonderful. -No. It's time we to bed. A．must go B．shall go C．have to go D．went 答案与解析:D 考查固定句型.It is time sb. did sth.或It is time that sb. should do sth.为固定句型.意为“该某人做某事了 .

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