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
It is not enough only_______the rules of grammar if you want to learn English well.
#98056
A
keeping in the mind
B
to keep in mind
C
to keep in your mind
D
keeping in your mind
He tried many times to squeeze out of the fence to see the open-air film _______ each time.
#98709
A
only to catch
B
unluckily caught
C
always being caught
D
only to be caught
---Why do you look so upset?---There are so many troublesome problems ____.
#94721
A
remaining to be settled
B
remained settled
C
remaining to settle
D
remained to be settled