The lecture, _____at 7:00 pm laze night, was followed by an observation of the moon with telescopes.A. starting B. being started C. to start D. to be started这是2012年湖南的一道选...
在网上看到这样一个句子:If they don’t understand it the first time, go over it again until they do. 如果他们第一次未弄懂,就给他们再讲,直到他们弄懂为止。句中怎么是用go over it而不是用go it over呢?我...