I'll be busy on Sunday morning and perhaps I'll have late night.A. the; aB. /; aC. /;

问题补充：

Ill be busy on Sunday morning, and perhaps Ill have late night.

A. the; a

B. /; a

C. /; the

D. the; /

答案：

A. the; a

(答案→)B. /; a

C. /; the

D. the; /

解析：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。