Question

一Have you been to Mexico?

一No,I ________ last year,but Dad wouldn't let me

1. A.
   was to have gone
2. B.
   was to go
3. C.
   was gone
4. D.
   went

Answer 1

A
考查be+to do的句型。be+to do通常表示“计划、安排”将要做的事情，还表示“有义务”要做的事。但在此，was to have done表示“过去原打算要做而没有做的事”。