ExtraEx.1_Paras.1-4 Fill in the blanks with the words given below. Change the form where necessary. Designs ___________. We know this to be true from experience. Many factors can influence the ___________ development of children. _____________ success is not always an open sesame ( 敲门砖 ) to a well-paid job. Sociology is a fairly new ____________. Why should you get ___________ in their fray( 争吵 )? Did he have an ___________ heart condition? The teacher has always tried to ___________ confidence into her. Is this solution acceptable to all ___________ concerned? I'll make an __________ study of a subject. 10. She improved her handwriting by ____________ practice.