She is the only one of the persons ________ from the mistakes.
| A．whom I know have learned | B．whom I know has learned |
| C．I know who has learned | D．I know who have learned |
–Come on, please give me some ideas about the project.
–Sorry, with so much work __________ my mind, I almost break down.
| A．filled | B．filling | C．to fill | D．being filled |
It is in the city ________ you’re going to pay a visit to _______ this kind of beer is produced.
| A．/; that | B．where; that | C．/; where | D．that; which |
It was ________ she got home ________ she found her diamond necklace missing.
| A．not until; that | B．not until; when | C．until; when | D．until; that |
While watching television, _______________________.
| A．the doorbell rang | B．we heard the doorbell ring |
| C．there was someone knocking at the door | D．we heard the doorbell rung |
_______ by greater demand of vegetables, farmers have built more green houses.
| A．Driven | B．Being driven | C．To drive | D．Having driven |