Question

 (2011·河南质检)By the time he realizes the mistake he

 ________， it will be too late for him to do anything about it.

A．has made 

B．made

C．makes 

D．will make

Answer 1

A

解析：句意：在他意识到他所犯的错误的时候，再采取任何措施已经为时已晚。显然，在他意识到犯错误的时候，他已经犯下错误，因此应用现在完成时。