Question

选择：i have a bike. it's___older one than mike's. A / B . the

Answer 1

C

首先 I am/ you are / it is 后面一般用 泛指

比如：I am a teacher.You are a student.It is a book.

其次：比mike的自行车旧的自行车不止一辆,有很多,我的只是其中之一.所以不能用the

最后,one单独出现时不能用a one,但前面有形容词,就可以+ a

a red one/ a better one

希望对你有用,不懂追问.