which sentence has a grammatical or spelling error? He shouldn't be operating a forklift right now, his certification expired last month. All students who wish to participate in this year's science fair need to attend one of our two introductory sessions. both sentences are correct.​

He shouldn't be operating a forklift right now, his certification expired last month.

Explanation:

In the given sentence, the error is in the use of the comma to join the two independent clauses. It is a grammatical error. This is known as comma splice. In order to rectify the error any of the given ways can be used:

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.

to me i think class room sitting education is better. i do online school and i have not learned a think haha. when i sit in the classroom i just sit there and kind of pay attention but still i get so far ahead in the class when im doing online i have nothing else better to do but play video games and i sit in school and learn and have friends and just actually learn. when i'm doing online i sit here listing to music and get on and and look up the answers i guess that is my fault for being a cheater. but to be honest i think sitting in the classroom is better.