The student handed up his work.
When we give something to someone in authority such as the police or a teacher, we use the expression “had in”. The Correct way – The student handed in his work.

She’s offing the light. Can I on the television?
Off and on cannot be used as verbs. The correct verbs are “switch off” and “switch on”. Open and close cannot be used instead of switch on/off. The correct way – She’s switching off the light. Can I switch on the television?

Where do you stay?
If you want to know where a person’s home is, we usually use the word live. Stay is only for short periods such as a holiday or a visit. The correct way – Where do you live.

Where do you stay?
If you want to know which hotel a tourist is using, we usually use the continuous form are staying. This shows it is only for a short time. The correct way – Where are you staying?

Please keep the toys.
To keep something means not to give it to others. When we want to put something in its proper place, we put it away. The correct way – Please put away the toys.

I have hurt my arm so could you please help me wear my jacket?
We have to put on the jacket so that we can wear it. To stop wearing it, we take off the jacket. The correct way – I have hurt my arm so could you please help me put me my jacket?

U-turn back at the lights.
“U-turn” is a noun that means a 180 degree turn to move in the opposite direction. We do not need “back” as the meaning is already there. The correct way – Make a U-turn at the lights.

Grand Opening – Officiated by the Chair of the Council.
People officiate at ceremonies; we cannot say they officiate ceremonies or that the ceremonies are officiated by them. However, the opening is being done by the Choir of the Council. The correct way – Grand Opening – By the Chair of the Council.

I asked her whether if I could go.
Usually we can choose to use either “if: or “whether” but we cannot use both at the same time. The correct way – I asked her if I could go or I asked her whether I could go.

The price of petrol would rise next week.
“Will” is used for certainty. The correct way – The price of petrol will raise next week.

Our proposal has been approved. All the old phones would be replaced before the end of the month.
“Will” is used for certainty. The correct way – Our proposal has been approved. All the old phones will be replaced before the end of the month.

They will be arriving tonight, is it?
The correct form of the question tag should match the main sentence. The correct way – They will be arriving today, won’t they?

We should ask the committee members what steps have they taken to help members.
Note the word order for indirect question. The correct way – We should ask the committee members what steps they have taken to help members.

She enquired were there any seats left for the opera tomorrow night.
Note the word order for indirect questions. She enquired if there were any seats left for the opera tomorrow night.

Someone asks: “Would you like a cup of coffee?” The other person answers: “I don’t mind.”
“I don’t mind” suggest that we don’t care either way while “I wouldn’t mind” says we definitely would like the coffee. The correct way – I wouldn’t mind.