________ many changes have _______, we should keep pace with the changes too.
| A．Since; taken the place | B．Because; taken place |
| C．Now that; taken place | D．As; been taken place |
—______ can we get the photos?
—In two days.
| A．How long | B．How often | C．How much | D．How soon |
The flowers were so lovely that they ______ in no time.
| A．sold | B．had been sold | C．were sold | D．would sell |
My cousin went to Canada two yours ago. He ______ there for a few months and then went to America.
| A．worked | B．would work | C．would be working | D．has been working |
—Look! He’s running so fast!
—Hard to______ his legs were once broken.
| A．know | B．imagine | C．realize | D．find |
—I’d like some more cheese.
—Sorry, there’s _____ left.
| A．some | B．a little | C．none | D．few |