题目内容
His brother is good at ________ (play) with computers.
答案：playing
提示：
提示：
| 固定词组be good at doing something，他哥哥很擅长电脑。
|
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题目内容
His brother is good at ________ (play) with computers.
| 固定词组be good at doing something，他哥哥很擅长电脑。
|