All his time _______research on Chinese history, he has no time for outdoor activities.
#91209
A
devoted to do
B
devoted to doing
C
devoting to doing
D
is devoted to doing
推荐题目
 __________ prices ___________so fast, we can't afford luxuries.
#91379
A
With; raised
B
As; raising
C
With; rising
D
As; risen
The transportation has improved a lot in that province, with two new roads ____ last year
#91080
A
constructing
B
to construct
C
constructed
D
construct