中国大学MOOC: ________ I known you were there, I would have telephoned.
举一反三
- ________ I known you were there, I would have telephoned. A: Had B: If C: Do D: Did
- If I had known you were ill, I would have come to see you (early) ____________.
- —The bus should take one hour and a half to get to the airport! I almost missed the flight! —______ you were leaving today, I would have drove you there. A: Have I known B: I have known C: Had I known D: I had known
- I would have come sooner if I had known you there. A: be B: were C: had been D: would have been
- If I had known that you were to arrive, I would meet you at the airport.（)