【单选题】You should ______ that he had been in bad health these days. He could do much better if he were well.
【单选题】He told me that I _____ better take a taxi.
【判断题】当由低牌号汽油换用高牌号汽油时,应适当提前点火提前角;而当由高牌号汽油换用低牌号汽油时,应适当推迟点火提前角。
【单选题】He thinks that we had better ______ the tickets first. [ ]
【简答题】He meant to take the next train to the place that he had been keen on, which meant staying here another night. 2. In spite of the fact that the police had warned them of the er in the ancient cave...
【判断题】一年中有12个月,这种计数方式属于十二进制。