根据句意,用方框中所给的词的适当形式填空。

1. She spends lots of time _____housework.

2. Li Lei _____swim in the river last year. Look, he is swimming.

3. His mother is ill at home. He _____look after her very day.

4. Tom's life became difficult after his.father's _____.

5. He_____school last year. He wasn't a student any more.

在日常生活中，铜制或银制的器具由于发生氧化而发黑．下列物品可以用来擦拭铜制或银制的器具，使之光亮如新的是（　　）

A．白猫洗洁精

B．镇江香醋

C．淮牌食盐

D．高度白酒