his wif isn,t very lucky

his wif isn,t very lucky But his wife isn't very lucky.请问可以用don't 代替isn't吗?为什么? his German isn t very His wife isn't lucky的同义句 The child isn't very smart,but his mother always Isn`t he lucky!是什么句子 He isn't good at his lessons,so his father is very a______ w Mr. Chen is a teacher and works very hard. _________ his wif There isn't very much Lucky _____ me there isn't too much homework today. No,she isn't.she'very active. My english isn´t very good,