我只需要几个苹果来做沙拉。

I only need ___a few apples to make the salad.

我只买了些苹果，因为店里剩下的不多了。

I only bought ___a few apples because there weren't many left in the store.

只需要再买几本书，我的收藏就完整了。

I just need to buy ___a few more books to complete my collection.