He was reading his book, completely _______ to the world. 
#98437
A
lost
B
losing
C
to lose
D
to have lost
推荐题目
Once ____________ ,  a plan should be carried out.
#96615
A
make
B
making
C
made
D
to make
  ________ the city center, we saw a stone statue of about 10 meters in height.(2010·上海)
#88303
A
Approaching
B
Approached
C
To approach
D
To be approached
Paul doesn’t have to be made ____. He always works hard.
#97004
A
learn
B
to learn
C
learned
D
learning