问题补充:
The price , but I doubt whether it will remain so.
A. went down
B. will go down
C. has gone down
D. was going down
答案:
A. went down
B. will go down
(答案→)C. has gone down
D. was going down
解析:考查时态。句意价格已经下降了,但是我怀疑它是否会保持下去。价格下降是过去的动作持续到现在,故用现在完成时态。选C。