his German isn t very

his German isn t very his wif isn,t very lucky The child isn't very smart,but his mother always But his wife isn't very lucky.请问可以用don't 代替isn't吗?为什么? He isn't good at his lessons,so his father is very a______ w There isn't very much This isn "t a German car ,It is___English car,A,a B,an C,the No,she isn't.she'very active. My english isn´t very good, pxx is very cute,Isn"t she? it sound very good ,isn't it? Becky is very happy,isn't she?