Had they known what was coming next, they________   second thoughts.

If may car _________more reliable, I would have driven to Lhasa instead of flying last summer.

—What happened to the young trees we planted?
—The trees       well, but I didn't water them.

Without Sir Tim, the father of the www, keeping up with the latest ____ so convenient．

---- If he had been warned, he ______ that food yesterday.
---- Luckily he was sent to the hospital immediately.

What a pity! If I had known Tom earlier, I ________ him to the party.

He suggested that a new library_________ near the key high school.

Mr. White , many customers want to see you._______ they wait here or outside?

— It’s ten years since I met you last time. I ________ you at all.
—I wouldn’t have, either, if someone ________ you by name.

—_____I stay with you?
— Well, I would rather you_____me alone for a while.