A: Are you going to enrol on the second course whe...

Câu hỏi: A: Are you going to enrol on the second course when we finish this one?B: I don’t know. It ‘s tiring coming every day after work. I ________ a month before I start the second course.

A have to wait                                                   

B am supposed to wait

C could have waited                                          

D may wait