Substitute a word beginning with re- for each of the underlined phrases.

1) The patient was(admitted again) after..
2)I would like you to(copy this assignment)in....
3) When the CD player broke I asked for my money (back again)

I'll be glad to check your answers.

1) readmitted

2) recopy
3) reback?????correct??

Your first two are correct. I'd reword the third sentence this way:

When the CD player broke, I asked for a refund.

To substitute a word beginning with "re-" for each of the underlined phrases, you can consider the following options:

1) The patient was re-admitted after...
- Find a word starting with "re-" that means "admitted again." In this case, "re-admitted" is a suitable substitution.

2) I would like you to re-copy this assignment in...
- Look for a word starting with "re-" that means "copy this assignment again." In this case, "re-copy" is appropriate.

3) When the CD player broke, I asked for my money re-back.
- Search for a word starting with "re-" that means "back again" or "returned." In this case, "re-back" can be used as a substitution.

Remember, the general rule is to choose a word starting with "re-" that conveys the meaning of doing the action again or repeating it.