which sentence follows the correct conventions for english usage?

Question

answers:
i don't think its that hard to read a whole book in one week if its a good book
if its an art class, steven is definitely going to try to get his name on its waiting list
its a meeting that will be held on saturday, and carol and ava will be its leaders
mary goes to the frozen lake and skated on its surface until its dark almost every day

Answer 1

The sentence that follows the correct conventions for English usage is:

"Mary goes to the frozen lake and skated on its surface until it's dark almost every day."

However, please note that there is a verb tense inconsistency ("goes" vs. "skated"). To correct that, it should be:

"Mary goes to the frozen lake and skates on its surface until it's dark almost every day."

Regarding the other sentences:

1. "I don't think it's that hard to read a whole book in one week if it's a good book." (Correction: "its" should be "it's" which is short for "it is.")
2. "If it's an art class, Steven is definitely going to try to get his name on its waiting list." (Correction: "its" is correctly used, but "its" preceding waiting list should be an "it’s" if it meant "it is".)
3. "It's a meeting that will be held on Saturday, and Carol and Ava will be its leaders." (Correction on capitalization of "Saturday", but "its" is used correctly.)
4. "Mary goes to the frozen lake and skated on its surface until its dark almost every day." ("its" should be "it's" which is short for "it is".)

So, while sentence 4 is mostly correct, it requires verb changes and one contraction correction to be entirely accurate.