句型转换，每空一词。

1. Could you give me some water? (改为祈使句)

    _____ _____ some water, please.

2. Please buy me a new bike. (同义句转换)

    Please _____ a new bike _____ me.

3. The watch is 100 yuan. (对划线部分提问)

    _____ is the _____ of the watch?

4. He wants to buy some apples. (用 oranges 构成选择疑问句)

    _____ he _____ to buy any apples _____ oranges?

5. We want to buy some meat. (同义句转换)

    We _____ _____ to buy some meat.

社会保障主要有以下几个特征______。

A．强制性

B．互济性

C．社会性

D．福利性

E．公平性