(A)根据所给单词，在空白处填入其正确形式，每词限用一次。

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Dear Grace,
    How are you? Thank you for your last e-mail. You want to know about my school clubs, right ? Well, it's time for us to join the school clubs now. There are many clubs in my school, like the English club, the art club, the music club and the sports club. I have two good friends, Jack and Lisa. We all want to join the school clubs.
    I want to join the music club, because I can play the guitar. I can't speak English well, but I also want to join the English club.
Jack likes sports. He can play soccer and basketball. He is in the school soccer team(队). He wants to join the sports club. He can play the guitar, too. But he doesn't want to join the music club.
    Lisa likes drawing. She wants to join the art club. She also speaks English very well. I think she can be in the English club. But she can't be in the music club. She can't play any instruments(乐器).
    Are there any clubs in your school? What club are you in? Please write an e—mail and tell me about your school clubs.
Yours,
Jane

比一比。

春____  静____   鹅____

唇____  镜____   饿____

平底茶杯放在水平桌面上，茶杯重3N，茶杯的底面积是25 cm²，茶杯内装有200 cm³的水。(g取10 N/kg)求：

设常数 $a\in R$ ，函数 $f(x)={\log }_2(x+a)$ ，若 $f（x）$ 的反函数的图像经过点 $（3，1）$ ，则a=____。