2 . 根据语境，选择下框中的单词，必要时用其正确的形式替换句中划线部分的单词，使之意思一致。

potential          circumstance          objective          encounter nevertheless        detect          acknowledge

1. There is little chance that we will succeed in changing the law. However, it is important that we try.
2. I did not admit that he had done anything wrong.
3. The company reserves the right to cancel this agreement in certain conditions.
4. We experienced a number of difficulties in the first week.
5. The European marketplace offers excellent possibility for increasing sales.
6. The tests are designed to discover the disease early.
7. The main purpose of this meeting is to give more information on our plans.

3 . 送奶工撞到石头，牛奶泼洒的到处都是。 (spill)
The milkman crashed into stone, ________.