Chia động từ với will / htđ

Chia động từ với will / htđ 
1 A. Could you post this letter for me please ?
   B. Yes , I ( do )___ it when I ( go )___to the shops
2 A. I might be late  tonight 
   B: OK I ( wait )___until you (arrive )___.
3 A : Have you decided what to do at the weekend ?
   B: No,but I ( phone )___you assoom us I ( Know )___
4. A. I;m learing next week 
    B: I ( see ) you before  your (go )___, won't I ? 
5. A: Have you done your homework yet ?
    B: No I ( do )___it when I (have )___enough time