单复数 时态 英语they saw a number of sheep were eating crops in the

单复数 时态 英语they saw a number of sheep were eating crops in the a sheep is eating grass at the foot of the hill变复数 英语单选：The number of books in the bookcase () 600. A number of 英语单复数问题a number of xxx 后面的be动词是单数还是复数the number of xxx 同上 Look!There ____a number of sheep ___grass in the fields. A.i 非谓语英语问题C19 ._____ for a long time,most of the crops in this 时态语态11.In the center of the garden _____ a large number of p They were a lot lower than any airplane l saw in the sky. They were walking in the street( ) he saw them I saw that they were watching TV in the hall 类似a number of词组 的单复数问题 A group of sheep are eating grass and leaves at the foot of