The _____ we saw yesterday come out to the farm once in a while.

A.cow B.deer C bear D wolf

选哪个呢，为什么？
越详细越好
谢谢！
答案是B,但不知道为什么，有知道帮忙解释一下

还有一个问题
All the _____ are made of _______, not plasitics
A glasses;glass B glasses; glasses C.glass;glass D glass;glasses
先哪一个呢？请解释。谢谢！

we mended the _____ This is the ship _____ we crossed the Pacific. We found the house very comfortable _____.初中英语 We were afraid _____(be)very late for the concert. How long _____ we have the mid-term examinations? If it _____ tomorrow,we will go to the park. We don't understand _____ the man said. We project that we _____ our sales goal by the end of the year. We stood at the top of the mountain lying _____ east of the city, When we got to the top of the hill, I could feel my heart _____.