Question

Fill in the blank with the most appropriate preposition:

Where can I check _______ for the flight to Hong Kong?

• A. for
• B. out
• C. with
• D. in

Answer 1

The correct option is D in

Here, check 'in' is correct because it implies to go to a desk in a hotel, an airport, etc. and tell an official there that you have arrived. Here, it is for the flight to Hong Kong.
Check 'out' is incorrect because it implies to be found to be true or acceptable after being examined.
'With' is incorrect because it implies in opposition to somebody/something; against somebody/something.