【单选题】I didn’t hear the telephone ringing. I _____.
【单选题】When I got home, my son _____. [ ]
【单选题】—Will you be able to finish the report before Friday? —I can’t ________ anything, but I’ll try my best.
【简答题】A.You are right. B.You don't know the time. C.My bike was broken. D.I slept 8 hours.
【单选题】“留白”是中国古代绘画最重要的美学特征,请问这个特征是在哪个时期正式确立的?
【单选题】I have to go home and do my homework _______ school, so I can't meet my friends. [ ]