问题
选择题
Dear me! Just _________ at the time! I _________ no idea it was so late.
A．look, have
B．looking, had
C．look, had
D．looking, have
答案
答案：C
第一空应填 look, 因为这是祈使句的谓语；第二空应填 had，因为前一句说“看看时间吧”，这一看当然知道了现在很迟的情形，“不知道这么迟了”显然应是“过去”的事，故应用一般过去时态。