描述进行中的运动：be doing句型 — 英语词汇题
题目
看描述，写出动词的正确-ing形式补全句子：1. Look! The girls are v_______（打）volleyball on the playground. 2. Danny is r_______（跑）fast on the track. 3. My father is s_______（滑）on the ice. 4. They are p_______（打）ping-pong in the gym. 5. We are w_______（观看）a basketball game now.