Which sentence contains an error in the use of end marks or commas?
how on earth did you fix that lamp.
take these tomatoes over to mr. jackson.
a shimmering blue curtain fluttered in the breeze.

The first sentence contains an error in the use of the end mark:

A) How on Earth did you fix that lamp.

Explanation:

The second sentence "Take these tomatoes over to Mr. Jackson." is in the imperative mood, which is a grammatical mood used to express requests and commands. It is common for imperative sentences to be finished with either end marks or exclamation marks, it depends on the feeling and urgency that needs to be conveyed. If it ends in an end mark, we may assume it is more of a request than it is a command, and the tone is not aggressive.

The last sentence is a declarative sentence, which is a structure used to state a fact, to offer information. A declarative sentence is the opposite of a question. It is typically closed by end marks, although it can present exclamation marks depending on the feeling conveyed.

The first sentence, however, is a question. A question is a structure used to ask for confirmation or information. Questions should end in question marks, otherwise the punctuation won't be in accordance to the purpose of the structure. If I said, "How on Earth did you fix that lamp.", I'd be punctuating the structure as a declarative sentence - and my intonation would be off when reading it. But if I say, "How on Earth did you fix that lamp?" the question mark at the end will reflect my asking for information - and my intonation when reading it will be appropriate.

jhrtih lkj gsoieds huh fdkh gj bsdfauio husgih usgerg rh

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.