下列语句中，没有语病的一句是

_____ to carry out the plan in time, they willmake careful prepatations

ch14, 2013, Xi Jinping was elected_______ president of _______People’s Republic of China.

All the volunteers(志愿者) were very tired, but ____ of them had a rest.—They were busy looking for the missing people.

He was disappointed ____ he had learned frombooks quite differed from his actual life.