She was staring out over the lake,_____ in thought. 
#98749
A
lost
B
losing
C
to lose
D
to having lost
推荐题目
   It’s hard for us to make a choice, which means we have not decided _____.
#97347
A
to take a step
B
to take which step
C
which step to take
D
to take what
When his father came into his room, Tom pretended _______ a book.
#92703
A
to read
B
to have read
C
reading
D
to be reading