помогите пожалуйста
Нужно поставить глагол в правельную форму
1 I often 1) ... (to buy) milk.
2 He 2) ... just ... (to buy) a book.
3 My brother 3) ... (to buy) a pair of jeans yesterday.
4 Robin 4) ... (to buy) a new computer next month.
5 I 5) ... (to buy) flowers for my mum now.