______ a good insulator , rubber is often used in cables.
#97954
A
Having been
B
To be
C
Be
D
Being
推荐题目
We walked a long way to see him off, only _____ that he had just left.
#93928
A
found
B
to find
C
finding
D
having found
I’d like to have this rope ____ that wire.
#93364
A
joined in
B
joined to
C
join in
D
join to
The music, ____________ pleasant, was soon well received when it was taken to the stage.
#89568
A
sounded
B
being sounded
C
sounding
D
having sounded
I’ve never heard the word _______ in spoken English. 
#97441
A
use 
B
used 
C
using 
D
useing
With the boy _____ the way, we had no trouble _____ the way to lead to Zhongshan Park. 
#96705
A
leading; finding
B
to lead; found
C
led; finding
D
leading; to find