英语高手帮我做几道填空题

题目

英语高手帮我做几道填空题
请用关系代词填空
1.Nothing___can be done has been done.
2.Do you have anything___you don't understand?
3I've read all the books___you lent me.
4The only thing___we can do is to give you some advice.
5.This is the best TV___is made in China.
6.The first museum___he visited in China was the History Museum

答案

that nothing不定代词后要用that
that 同上
that all ...that 固定用法
that only 后接that 固定用法
that best等最高级后用that
that first修饰 用that 固定用法