With his attention _____ on his book, he didn’t notice me enter his study.
#90997
A
focusing
B
focused
C
to focus
D
focus
推荐题目
Some steps have been taken to prevent the forest ____ .
#91549
A
from destroying
B
to destroy
C
from being destroyed
D
to be destroyed
With Christmas ________, the children in my class are becoming more and more excited.
#91286
A
approached
B
to approach
C
being approached
D
approaching
 With all the money ________, the man had to make a living by begging.
#91447
A
run out
B
to run out
C
used up
D
to use up