There is thing as a free lunch.

My parents want me to get further study to be ____ an engineer _____ a scientist,______ I would like to be a famous surgeon doctor.

He came to a point _______ there was no more road to follow, and before him he could see nothing but a thick forest.

Rising sea levels and drought caused byglobal warming could anincreasing number of natural disasters.

g ______ retirement age in progressive steps is in line with China’s labor market realities, ______ official said on Tuesday.