Answer the following dialogue 1st prep term2

  Finish the following dialogue

-Hala and Dina are making a salad.
 

Hala: Today, we are going to make a nice salad. The first thing that you have
to (1) ………………….……..  these tomatoes and cucumbers. 
Dina: OK, I’ve done that. Do I cut the onions now  ? 
Hala: Yes.( 2 )……………….  , peel off the skin. After (3) ………………. , cut the onions carefully.
Dina: OK. I’ve done that, too.
Hala: The next (4 )……………………… is to cut the tomatoes and cucumbers
Dina: That’s easy