用所给单词的适当形式填空

1. Will it be __________(wind) the day after tomorrow?

2. Look, there are too many people there. It's always __________(crowd) at weekends in big stores.

3. The film is __________(real) interesting.

4. The baby was __________(sleep) when I came in.

5. He stopped __________(talk) with me when he saw me.

6. The trains only run __________(two) an hour on Sundays.

7. This line is moving __________(slow).

8.I hate __________(travel) by bus.

9. I'm __________(good) at playing the piano and writing the singing.

10. There are many people waiting in line __________(buy) train tickets.

在500mL 0.1 mol·L^-1的FeCl₂溶液中通入一定量Cl₂，待反应结束后，将溶液稀释到1 L，再取出稀溶液加入足量的AgNO₃溶液，得到2.009g沉淀。

（1）原溶液中被氧化的Fe²⁺的物质的量为__________mol。

（2）若将剩余的Fe²⁺全部氧化，还需加入0.5 mol·L^-1的稀硝酸_________ mL。