—Hi,Peter. Long time no see. —Oh,it’s you,Jack. I’m sorry I didn’t  ________ you at first. 
#70423
A
know
B
recognize
C
remember
D
realize
推荐题目
Once our supplies _______, we will take the risk of starving to death. 
#83575
A
have dried out
B
are given out
C
have dried up
D
have been run out
To get to the top of the mountain, we had to _______.
#81498
A
go some walking  
B
do a lot of climbing
C
walking a long way
D
doing a lot of climbing