Дописать предложения: 1.I39;ve been wondering if_____. 2.There39;s plenty worth seeing in____,but

1. Ive been wondering if you will be able to solve that problem. 
2. Theres plenty worth seeing in our city, but Im not sure if the tourists from Europe will like it. 
3. Its a matter of concern because of its difficulty. 
4. You probably know that everyone saw the worst of that difficult time. 
5. Perhaps one of the first things that strikes the visitor to the pyramids is the way it is built. 
6. Thats sad, but I guess that everything will be all right. 
7. One things Im learning is that we should respect each other. 
8. Thats the best way to show your abilities. 
9. Then I seem to know the right answer.