To my surprise, he was lost in thought then and not ____ of my presence at all. 
#19358
A
certain
B
fond
C
sensitive
D
aware
推荐题目
The thief must have hidden somewhere in the _______ area.
#17991
A
following
B
surrounding
C
surrounded
D
surroundings
   – Are you married?--No, still______.
#19852
A
one
B
single
C
separate
D
myself.
 The sea was calm and _____.
#20442
A
quite
B
quiet
C
yet
D
rough