― Why ______ you stay in the countryside, where it’s not convenient to go shopping?
―But I’ve found it rather valuable for my health.
| A．can | B．must | C．may | D．shall |
We ___ to start our own business, but we never had enough money.
| A．have hoped | B．had hoped | C．would hope | D．should hope |
—We could have walked to the doctor’s; it was so near.
—Yes. A ride ___ at all necessary.
| A．wasn’t | B．hadn’t been | C．wouldn’t be | D．won’t be |
— Are you going to the ball tonight? —It’s too late now. How I wish ___ about it earlier.
| A．I’ll know | B．I’ve known | C．I know | D．I’d known |
_____ the fog, you would find the beautiful tower in the distance easily.
| A．Had it not been for | B．I at were not |
| C．If it had not been for | D．Were it not for |
Without the air to hold some of the sun’s heat, the earth at night ___, too cold for us to live.
| A．would be freezing cold | B．would be frozen cold |
| C．would be freezing coldly | D．can freeze coldly |