Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
_A Chinese runner,Liu Xiang,rushed to the ending line _______a surprising speed.
_The work is easy for an expert _______it is difficult for an inexperienced person.
_You must get up early in the morning, ______we’ll have to leave without you.
_Stressful environments lead to unhealthy behaviors such as poor eating habits,which_______increase the risk of heart disease.
_ I was_______ the point of telephoning him when his letter arrived.