[lemma=","] [lemma=they] [tag=□] □
[lemma=","] [lemma=they] [tag=VBP] □
[lemma=","] [lemma=they] [tag=NNS] □
As children grow and develop , they experience many successes and failures . However , they face many types of uncertainty . " Today , they include many features from the United States.After six years in elementary school , the rules state that children must enter junior high school , or their parents may be fined . For students to become comfortable with grid formats , they need many opportunities to work with them as a part of their regular mathematics instructional program . As two rising regional powers , they have many grievances about the international system , which has " mistreated " them over the past two centuries or so , while creating barriers to their emergence as global powers .