He’s good at his job but he seems to _____ confidence. [ ]

Latest researchers show children _______ with high levels of air pollution during their first year of life run a great risk of developing certain disease[ ]

29．Was it in the beautiful park _____was located by the sea ____we first met our new Chinese teacher?

_______, you will get used to the life here and have your understanding of life.

Work hard, ______ you’ll pass the exam.—OK. I’ll try my best.