It is a r— gold watch

金表是gold watch 还是 golden watch?
比如下面这道题填哪个?为什么?
His ＿＿watch is worth a lot of money.
那为什么金鱼是gold fish呢??

1.it is a ( )gold watch,but i don't know the ( )price of it.
A.real actual B.real actually C.really actually D.really actual
我认为选D对吗?
2.the news( )we are going to the United States is not true.
A./ B.that C.which D.what
这道题C项为什么不对?
3.this term Alice has made great progress in her studies
---you are right.and( )
A.so you have B.so she has C.so have you D.so has she
这道题怎么理解,我觉得B项更符合吧?她确实取得好成绩,可以这么理解吧?
麻烦帮看看谢谢!