GRAMMAR present perfect + yet, just, already
Complete the conversations using the words in brackets in the present perfect form. Use contractions where possible.

2 A ____(you/do) your homework?
B No, I haven't, I'm going to do it later,

3 A What's for lunch?
B don't know. ____(I/not make) anything

4 A What's the matter?
B _____ (I/cut) my hand.

5 A ____ (I/make) a big mistake
B Oh, no. What have you done?