问题

Tom was so careless that he often________the exam．

A:make mistake of
B:talk
C:have talked
D:made mistakes of;

正确答案是：

同类题型

They will ________ their laptop computer brand in the newspaper, with a 10 percent discountfor the customers.[ ]

______ he didn’t know the custom in that country; otherwise, he wouldn’t have made such a mistake [ ]

对下列句子的句式判断错误的一项是（3分）

With the help of high technology, more and more new substances ______ in the past years

What are your school ________, Jack — Well, at school we have to wear school uniforms.