Choose the correct word. 1) they will phone us as soon as they will arrive/arrive. 2) mother was cooking as/while father was pottering in the garden. 3) you should wash your hands before eating/eat. 4) they trusted him but first of all/eventually they realized that he was a liar. 5) she waved goodbye just as/while i turned back. 6 the postman came as/finally he was leaving his office.