问题
选择题
—Tom, it seems that you haven’t cleaned your bedroom the whole week .
—You didn’t come in around 10 yesterday morning; I ________ it .
A．cleaned
B．have cleaned
C．was cleaning
D．had cleaned
答案
答案：C
本题考查时态。根据语境可知昨天上午10点左右，我正打扫卧室，可知用过去进行时，选C 。
