问题
选择题
I'll be busy on ________ Sunday morning, and perhaps I'll have ________ late night.
A．the; a
B．/; a
C．/; the
D．the; /
答案
答案：B
B 考察冠词。由语境可知，周日早上我很忙，也许晚上还要晚睡。On Sunday morning意为“在周日的早晨”；have a late night晚睡，符合上下文语境。故B正确。