---Where’s Li Hua?---Look! He tennis on the playground.A. playsB. playedC. was playing D.

问题补充：

---Where’s Li Hua?

---Look! He tennis on the playground.

A. plays

B. played

C. was playing

D. is playing

答案：

A. plays

B. played

C. was playing

(答案→)D. is playing

解析：句意：李华在哪儿？——看，他正在操场上打篮球。结合语境可知下文描述的是现在正在进行的动作，故用现在进行时态。选D。