请帮我英译汉这些句子，不要用那种网上的翻译，翻译过来的句子语法都是错误的！谢谢

1. 我怀疑他是否会遵守诺言（doubt）
I doubt wether he will keep his words.
2.她帮助别人并不期待任何回报（in return）
She helps others and expects nothing in return.
3.虽然它摸起来像石头一样硬，可是加热后却很容易融化（feel/melt）
It feels as hard as stone, but melts easily if heated.
4.孩子们总是喜欢把旧钟表拆开（take apart）
Children always like to take old colks apart.
5.我决定写信给他而不是打电话（rather than）
I decided to write to rather than call him.
6.汤姆考试没及格，这让我很吃惊（非限制性定语从句）
It shocks me that Tom failed the exam.

1. I doubt if he will keep his promise.
2. Her help to others is not in return for rewards.
3. Although it feels hard like a stone, it will melt after heating.
4. Children always like taking the old clocks apart.
5. I decide to write to him rather than telephone.
6. Tom failed in the exam, which made me surprised.

i doubt if he would keep his word
she helps others and never asks for anything in return
though it felt as hard as a rock, it melts easily if heated
kids always have fun taking apart the old clock
i decide to write him a letter rather than call him
tom didn't pass the exam, which surprised me

1.I doubt if he will keep his promise.
2.She helps people without expecting anything in return.
3. Although it feels as hard as rock, it melts easily after being heated.
4. Kids always like taking the old clock apart.
5. I decided to write him a letter rather than calling him.
6. Tom failed the exam, which suprised me.

1.I doubt whether he will keep his promise
2.She help others didn't expect anything in return
3.Although it feels as hard as stone, but after heating but easily melts
4.The children are always like the old clock apart
5.Tom failed in the exam, it makes me surprised

1) I doubt if he would keep his promises.
2) She helps others, expecting nothing in return.
3) While it feels as hard as a rock, it melts easily after being heated.
4) Kids always find it interesting to take apart the old clocks.
5) I've decided to write to him rather than make phone calls.
6) Tom failed in the exams, which surprised me a lot.