Fill in the blanks.use already,just or yet.
1 .Can you wait for me?I haven't finished yet.2.Look!Mary has .......fallen. 3.Have you done your homework....?4.I know !I've...had an idea. 5.I haven't been to London.....6.I'm really happy. I 've ....seen the Queen of England!7.Has she tided her room....?​