动词时态语态
30．(2015·江苏高考)The real reason why prices ________， and still are, too high is complex, and no short discussion can satisfactorily explain this problem.
A．were B．will be
C．have been D．had been
解析：选A 考查时态。句意：物价过去很高，现在依然居高不下，其真正原因是复杂的，不是两三句话能圆满解释的。根据空格后面的and still are(而且现在仍然是)判断，前面是指物价过去的情况，应用一般过去时，故选A项。
35．(2015·湖南高考)That's why I help brighten people's days. If you ________， who's to say that another person will?
A．didn't B．don't
C．weren't D．haven't
