好的我又来了~有人能帮我对一下这英语答案么?错的帮我改一下.

好的我又来了~有人能帮我对一下这英语答案么?错的帮我改一下.
the Object Clause
1.I didn’t know whom the letters _was_ from.(be)
2.I didn’t know what time he _wrote_ the letter.(write)
3.Miss Wang told me that the earth _moves_(move)
round the earth.
4.Could you tell me who _has took_ away the book
already?(take)
5.Ling Feng told me he _has been_ to several times.(be)
6.Our teacher told us in class the sun _rises_ in the east.(rise)
7.Can you tell me what they _did_ yesterday?(do)