Question

I often do my homework ________ Sunday evening．

A. in
B. on
C. at
D. for

Answer 1

答案B
在早上，在下午，在晚上应该说in the morning, in the afternoon, in the evening．如果在morning, afternoon, evening等词的前面有修饰语，则应该用介词on．例如：on Monday morning, on a cold evening, on a summer afternoon等．"