By serving others，a person focuses on someone other than himself or herself，______ can be very eye­opening and rewarding.

smoke any more, Ralph ! It is very bad for your health! –I know I should give up smoking, but ________

The Belt and Road is a new force of promoting the development of the world economy, that will further push China’s opening-up.

__________ I can see, there is one possible way to keep away from the danger.[ ]

This special strain of rice makes _________ possible to produce one third more of the crop in the same fields.