____________better ways for digging tunnels__________, the first railway tunnel under the River Thames     was dug in 1884.
#100801
A
As , developing
B
With, developed
C
As , were developed
D
With, development
推荐题目
When I got there, the meeting _____ for ten minutes.
#102051
A
has been on
B
had begun
C
had been on
D
has begun
I ran across David while walking along the street yesterday. I ________ him for three years.
#100346
A
hadn’t seen
B
didn’t see
C
haven’t seen
D
don’t see
With more forests being destroyed, huge quantities of good earth      each year.
#102348
A
is washing away
B
is being washed away
C
are washing away
D
are being washed away