2. He decided to visit the family _______ Friday night.
A. on B. at C. in D. over
答;A。表示在某年(月、季节)用介词in,表示在某日或某日的上(下)午,早(晚)用介词on,表示在某时(刻)用介词at。
3. He suddenly returned ________ a rainy night.
A. in B. at C. on D. during
答;C。表示在某日的上(下)午,早(晚)用介词。no注意比较in the mornmg (afternoon, evening) 在上(下)午,晚上,并非指特定的某臼的上 (下) 午,早(晚)。at night在夜里。试比较 on an afternoon (evening)。