____the problem of land erosion(侵蚀) getting more serious, the government is searching for a way to deal with it.
#95586
A
As
B
When
C
With
D
If
推荐题目
More bison were killed．The bison population is thought ______ from 60 million to just a few hundred between 1850 and 1910.
#96722
A
to have fallen
B
having fallen
C
to fall
D
falling
The police spotted a thief________ things in a mall at this time yesterday.
#91714
A
stealing
B
steal
C
robbed
D
picking
She became fatter and fatter, so the doctor advised her _____________.
#95837
A
losing weight
B
to lose weight
C
to keep weight
D
to gain weight
The question ______ last night was of great importance.
#97848
A
discussed
B
discussing
C
to be discussed
D
discuss