Hainan province lies ______ the south of Guangdong province, which is ______ the south of China.
— Do you remember the first time we met?—At that time you ______us a lecture.
Your _______ as a student will be excellent if you develop a habit of reflecting on how you learn.
The scientists are beating their brains, trying to ______ a solution to the problem.
The opening ceremony of the Olympic Games will be broadcast ______ this weekend. You can expect an exactly ______ night.
______from the top of the mountain, the village looks like a small box.