The past two years ________ a sharp rise in oil price,which adds to the burden of auto transportation industry.
#99722
A
witnessed
B
has witnessed
C
is witnessing
D
witnesses
推荐题目
—Did you know any French before you arrived in Washington?  —Never ____ it, actually. 
#104212
A
had I learned
B
have I learned
C
I learned
D
was I learning
Give me a cigarette, please. Mine         .
#102417
A
has been given out
B
has been run out
C
has used up
D
has been run out of