what is the best topic sentences about the following topics?

Write one topic sentence about each topic of the following :

1-  The cell phone.

2- A phone call. 

3- A particular family member. (father)

4- Your dream hause.

5- A view out of window.

6- Favourite place. (Paris)

7- An accident. 

8- Laptop computer.

I need them have strong topic sentences.

Here is an example of the the first one which I need to include the exact words of the topic in the topic sentences:

1-  The cell phone is a good way to talk to people over seas or if you don’t want to go and see people you call them.