There is one mistake in each sentence. Find, and correct it.
21. Do (A) you know (B) how much (C) a banana cost (D)?
22. We left (A) our luggage at (B) the station and go (C) to find something to eat (D).
23. What (A) an (B) awful weather! I can’t do anything (C) almost (D) the day.
24. Don’t (A) make (B) Peter to wake (C) up. He is sleeping (D).