By the time he realizes he _____ a mistake, it’ll be too late for him to change his mind.    
#101944
A
makes
B
made
C
has made
D
had made
推荐题目
I ______ my winter holiday with my family in Beijing next month. 
#101605
A
am spending
B
spent
C
have spent
D
spend
The next day she ______ her father what _______ when the man came again.
#104162
A
told; happened
B
was telling; had happened
C
had; told  
D
told; had happened
—He_______to the meeting. Have you informed him of it? —Sorry. I _______to.
#104223
A
hasn’t come; am going
B
didn’t come; have forgotten
C
hasn’t come; forgot
D
doesn’t come; will have