Before writing a topic sentence, it is often advisable to consider the types of support that you can use. Asking yourself how you can make an interesting paragraph is also helpful in composing a paragraph that will not be banal.
To create a topic sentence ask "What about it [the topic]? For instance, with the topic of "the job of waiter," ask what about the job of waiter? Your answer is the topic sentence. An example may be something like this: Patience, alacrity, and politeness are three qualities essential to the job of waiter.
One for the restaurants in town: There is little variety in the restaurants of our town.
One for the worst meal I have ever eaten: The first meal I ever cooked myself was probably the worst meal that I have ever eaten.
For some help in writing your paragraph, check out the site below:
topic sentence for The job of waiter:
Many people take the job of waiter because it is a quick way to earn money.
topic sentence for Restaurants in our town:
The restaurants in our town offer a variety of cuisine, prices, and atmosphere.
topic sentence for The worst meal I've ever eaten:
I often enjoy eating Italian food, but on this particular night, it was the worst meal I’ve ever eaten.