The expert says that nowadays there are too many problems linked to poor diet and a ________of exercise.
15. It’s only by travelling or living in a country and getting to know its inhabitants and their language _________ one can find out _________ a country and its people are like.
14. There is no doubt__________since he is always a punctual person.
13._________his size, I guessed that he was a basketball player.
12. But for your help, I_____________the exam.
11.Word came________the president would be shown around our school.