wrong sentences

Correction: This is quite acceptable. Also as an alternative, I'd say it this way,
"He will not tell you anything about your callousness."


Correction: Unclear what is meant here. I can guess and suggest this, "We have an idea as to how the students think."


Correction: Though this is not meant to be funny but it sounds like the girls are being cooked. This is a classic misplaced modifier. My suggestion is, " There is a good tradition as to how well the girls can cook."


Correction: meaning is unclear. I can only guess and suggest this,"Nobody before now has shown audaciousness in their personality."


Correction: No correction needed but I might add this for slightly more clarity,
"There is a playground on our street before our house.

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Correction: the meaning is unclear to me so I suggest this alternative: "As time passed, we were defeated."

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Correction: Fine as it is. An alternative also might be, "We were deprived before Bangladesh was granted independence."


Correction: There's nothing wrong with your sentence as it is. For slightly more clarity, I'd say, "I must test their loyalty (or dependability) before trusting anyone."


Correction: None needed. This is acceptable as is.


Correction: I didn't allow anybody entry before you entered the room.


Correction:
This is very unclear. I'm guessing but I'd say, "They left before we started waiting for them."


Correction:
See me first before borrowing money from him.


Correction:
He will phone me before he comes abroad.

Wow Rag gotta hand it to ya

Thanks Ragman for having more patience than I.

You are really great.