There is six lamps____ the ceiling of the auditorium（礼堂）of Yetang Middle School,and with these lamps in the evening the teachers can play badminton

What do you think of Andrew—–There are some things ____ are noteasy to ______, and his rudeness is one.

21He apologized ________ late

Everything was perfect for the picnic ______ the weather

依次填入下列两句中横线处的语句，与上下文语意连贯、音节和谐的一组是（ ）（1）每逢深秋时节， 松竹山茶，色彩绚丽，美景尽览。（2）远眺群山环抱， 近看小河流水，茶园葱绿，松竹并茂。①置身山顶，俯瞰槐榆丹枫，②置身山顶俯瞰，槐榆丹枫，③白云缭绕，层林叠翠； ④层林叠翠，白云缭绕；