各位拜托帮我解决一道英语题吧。谢谢！

This is an English book.
It's difficult to learn english.
Mary is a good student.
Chinese is our mother-tougne.
Are you Mr. smith from American?
I'm sorry that we can't do anything about it.

1.This is an English book.
2.It is difficult/hard to learn English.
3.Mary is a good student.
4.Chinese is our native language.
5.Are you Mr. Smith from American?
6.I'm soory,but we have nothing to do with it.

祝你进步！

1.这是一本英语书。 This is an English book.
2.学英文很难。2.It is difficult/hard to learn English.
3.玛丽是个好学生。3.Mary is a good student.
4.汉语是我们的本国语。Chinese is our mother-tougne.
5.你是美国来的史密斯教授吗？ Are you Mr. Smith from America?
6.真遗憾，可是我们什么办法也没有（无能为力）。I'm sorry that we can't do anything about it.

1.This is an English book.
2.It's difficult to study English.
3.Mary is a good student.
4.Chinese is our mother tongue.
5.Are you Pro.Smith from Ameri