根据句意，用所给单词的适当形式填空。

1．Sometimes an ad can lead you         (buy)something you don’t need at all．

2．        (be)on time is very important to us．

3．My grandmother is used to         (live)in the countryside．

4．When prices       (list)，you can go to the store with the lowest price．

5．The most         (populate)part of China is the southeast．