______earlier, I' d have told you.
| A．If I would have known it | B．Had I known it |
| C．If I knew it. | D．Should I know it |
—I forgot my mother's birthday!
—________ Better keep it in mind next year.
| A．I'm afraid so. | B．So what? |
| C．You did? | D．No wonder. |
—Would you mind giving me a lift?
—________. I am happy to.
| A．Not at all | B．Don't mention it |
| C．Never mind | D．You don't say so |
— I wonder if I could make a living by writing.
—________？
| A．Who cares | B．How dare you |
| C．For what | D．Why not take a chance |
—We need three single rooms for the first week in June.
—________. The hotel's not busy then.
| A．No problem | B．Don't bother |
| C．Never mind | D．It doesn't matter |
—We can give you a ride into town.
—________Thank you.
| A．Yes，why not? |
| B．Oh，it would be my pleasure. |
| C．Yes，please. |
| D．Oh，that would be great. |