1.Jack‘s brother eat fish twice a week.
2.Peter only watches TV on Friday.
3.Jim's cousin plays ping pang at every Thursday afternoon.
4.Lily often plays computer games at Saturday afternoon.第3题 为什么用的是"at“ 不是On吗我错了，555，是on在“星期四的下午”的英语不是on Thursday afternoon吗是on啊，我卖萌了，抱歉