根据所给单词和句子意思，写出正确的单词形式。

1. Boys and girls, Help ________(you).

2. I have many personal ________.(strong)

3. He introduces ________(he) to us.

4. My friends are _________(Germany).

5. I like to play ping-pong. I am one of the best ________(play) in the school.

现国内长途如何收费（）。

A.0.07元/6秒

B.0.08元/6秒

C.0.60元/分钟

D.0.72元/分钟