问题
选择题
Japan’s economy _______ in the past twenty years. No one knows how long it ______ before it regains its increase.
A．has been declining; will be
B．has declined; would be
C．had been in decline; would take
D．was on the decline; will take
答案
答案：A
题目分析：考查动词的时态和语态，。句义：在过去的二十年里日本经济已经下滑了。没有人知道再过多久才能恢复增长。