Question

7. Evidence has been found through years of study_______ children's early sleeping problems are likely to continue when they grow up.

Answer 1

7.  that句意：通过多年的研究，已有证据表明孩子的早期睡眠问题很可能会持续到他们的成年时期。句中that引导的是同位语从句，说明evidence的内容，从句中不缺少任何成分. 应用that引导。