The past two years _______ a sharp rise in oil price,which adds to the burden of auto transportation industry.
#100085
A
witnessed
B
witnesses
C
is witnessing
D
has witnessed
推荐题目
 Selecting a mobile phone for personal use is no easy task because technology __________ so rapidly.
#104438
A
is changing
B
has changed
C
will have changed
D
will change
In the past several weeks, many cities in Northern China        from heavy fogs and  severe cold.
#99857
A
had suffered
B
have been suffering
C
were suffered
D
suffered
---Why do you keep looking back? ---I have a feeling that we _______.
#103489
A
were followed
B
have been followed
C
are being followed
D
are following