Question

He had to be reminded two or three times ________ he could avoid making the same mistake. A．..

He had to be reminded two or three times ________ he could avoid making the same mistake. A．before B．until C．when D．after

Answer 1

A

连词辨析。A.在……之前 B. 直到…… C. 当……时 D. 在……之后。句意：在他可以避免犯同样的错误之前，不得不提醒他三到两次。选A。