描述此刻正在做的动作 — 英语填空题
题目
It is 8:00 on Saturday evening. Jack is in his room. Listen! His brother Tom ___ (play) the guitar in the next room, and their parents ___ (watch) TV in the living room. Right now Jack ___ (not do) his homework; he ___ (write) an email to his pen friend. 用所给动词的适当形式填空。