---My brother is a basketball player.-And he usually very hard on the playground. A. ha

问题补充：

---My brother is a basketball player.

---And he usually very hard on the playground.

A. has practiced

B. is practicing

C. practices

D. practiced

答案：

A. has practiced

B. is practicing

(答案→)C. practices

D. practiced

解析：

试题分析: 句意：我哥哥是篮球运动员。通常他在操场上很努力地练习。Usually通常，一般现在时的标志，故选C。