________ his lessons , he failed in the exam. 
#90060
A
Not reviewing
B
Having not reviewed
C
Not reviewed
D
Not having reviewed
推荐题目
He found the manager _____ by letters and papers and _____ very worried.
#94682
A
surrounding; looked
B
surrounded; looked
C
surrounding: looking
D
surrounded; looking
He did nothing but ________walk in the street. 
#95370
A
taking    
B
take    
C
to take    
D
took