题目内容：

改正句子中的错误1.I have a English-Chinese dictionary.2.Please give they back soon.
3.The students are thinking careful.4.All of them is working hard.5.Jim is sitting in classroom and has a maths class.

优质解答

a 改为 an 
they 改为 them
careful 改为 carefully
is 改为 are 
has 改为 having