帮忙看下这几句英语有语法之类的错误吗

题目

帮忙看下这几句英语有语法之类的错误吗
1.Jack shares the similar characteristic with Andy who is energetic and outgoing,but he is so impatient.
2.Suzy is a creative boy,now he is doing an experiment in the laboratory to invent something useful.
3.David always has cheese for all the meals,and he has a toothache now,he must go to the dentist’s otherwise he will get badly ache.

答案

2 3 句有相同的毛病 两个并列的句子之间要有连词 修改如下2.Suzy is a creative boy,and now he is doing an experiment in the laboratory to invent something useful.3.David always has cheese for all the meal...