在买合同中,买卖双方都既享有权利,又承担义务,双方的权利义务相互对应,所以,买卖合同又叫()。
A.双务合同
B.有偿合同
C.要物合同
D.不要物合同
参考答案:A
When I got on the bus,I ________ I had left my wallet at home.(2011·山东)
A.was realizing
B.realized
C.have realized
D.would realize