My teacher said that I'm not confident enough.And what should I do?

my teacher said that light traveled faster than sound改错 The teacher said that she hadn't heard what I said.The teacher said that she hadn't heard () () my words. The teacher said that she had heard none of my words.(保持原句意思)The teacher said that she hadn't heard____I____. My teacher said that I _____a lazy student.A was B am（为什么?） The good news is that my math teacher said I was hard-working.是从句么? My teacher said that I'm not confident enough.And what should I do? My physics teacher said that light travels faster than sound.翻译?翻译? my physics teacher said that light ____ faster than sound.a.travel b.travels c.traveled Don't be____(noise),that teacher said. The teacher said that the earth runs Don't be____(noise),that teacher said. That teacher said that that that that that student said was wrong. 有的宾语从句中有THAT,请问这里的THAT是什么意思?例：My teacher said that I should work hard.这句话中THAT my sister is a primary school teacher .oneday one of her students said that a dird had duilt翻译 my geography teacher said that the earth ___ around the sunA.will go B.goes C.was goingD.went My physics teacher said that light＿＿（travel）faster than sound.（请说明原因） THAT THAT THAT THAT STUDENT ASKED WAS NOT LIKE THAT THAT THAT THAT TEACHER SAID That teacher said that that that that that boy used in that sentence was not correct.