Chia từ cho thích hợp

1.i can't help (sneeze)---------------;i caught acold yesterday form(sit)---------------in a draught.
2. stop (talk)-------------------;i am trying (finish)------------------a letter.
3. his doctor advised him (give)-----------------up(jog)----------------------.
4. my watch keeps (stop)------------------------------.
5. people used (make) ---------------------------fire by (rub)--------------------------two sticks together.