Write
a) how long you have known your best friend (на протяжении 5 лет)
b) how long you have had your backpack or schoolbag (с 7 лет)
c) what you have wanted to do all your life (прыгнуть с парашюта)
d) since when you have been a pupil (с 1 класса)
e) whom you have always loved (родителей)
НУЖНО ОТВЕТИТЬ В THE PRESENT PERFECT PROGRESSIVE TENSE