合同当事人应当严格按照合同规定的标的履行自己的义务，未经权利人同意，不得以其他标的代

A: Did you and Rose have a good time last weekend?
B: Yes.    1  
A:    2  
B: Yes, she was.
A:    3  
B: First we went to row in the park.
A: That’s very exciting    4  
B: Late we went to the theater to see the movie Love me Once More, Mom.   5  
A: Li Dong also said it was very interesting. I will go to see it next Friday.

A. What did you do?                       B. Why were you unhappy? C. But waiting for her made me very unhappy.   D. I also like to row. E. We went there by bus.                    F. It is wonderful. G. Was Rose late again?