关于桑螵蛸，指出下列正确的是

A．重在补肾、助阳、固涩，为肾虚阳衰、精气不固所常用

B．主治肾阳虚所致的遗精滑精、遗尿尿频、带下

C．主治肾虚阳痿

D．功效补肾助阳，固精缩尿

E．阴虚火旺、湿热或湿热所致的尿频、遗精等忌用

根据句意及汉语提示填空。

1. I can lend you some _____ (磁带) of her songs.

2. I have many musical instruments.  I can play the _____ (小提琴).

3. I called you yesterday evening.  _____ (没有人) answered.

4. I'm not sure _____ (是否) he will come or not tomorrow.

5. He is very funny and often makes us _____ (笑).