—I’m sorry, but there’s no smoking in this section on the train.
—Oh, I ______ that, and I won’t again.
| A．don’t know | B．didn’t know | C．won’t know | D．haven’t known |
If he had worked harder, he _________.
| A．would succeed | B．had succeeded |
| C．should succeed | D．would have succeeded |
Supposing the weather ________ bad, where would you go ?
| A．is | B．will be | C．were | D．be |
If I _______ it, I would do it in a different way.
| A．were to do | B．do | C．had done | D．was to do |
If it _______ next week , the crops would be saved.
| A．rains | B．will rains | C．would rain | D．should rain |
If he _______ tomorrow, he would find Mr Wang in the office.
| A．comes | B．will come | C．should come | D．come |