He came to a point _______ there was no more road to follow, and before him he could see nothing but a thick forest.
Better _____ all the lights are turned off before you leave the classroom.
He lives in a _____ city, I mean in a city that is ______ .
4. It is reported that China’s ______ first Mars probe Yinghuo-1 will be launched with the help of _____ Russian launch vehicle in Oct. 2009. (China Daily)
3. He is teaching in his hometown now, but he________ in a hospital for 10 years.
_____ more attention, the trees could have grown better.