There are many famous cultural relics in our country, many _______ thousands of years ago.
| A．dating back to | B．date back to | C．dated back to | D．were dated back to |
—How long have you been in this office?
—Just a few minutes.My cousins ________ here together with me.
| A．have walked | B．had walked |
| C．walked | D．have been walking |
—Why don't we choose that road to save time?
—The bridge to it ________.
| A．has repaired | B．is repaired |
| C．is being repaired | D．will be repaired |
I had wanted to take the career of being a model, but I ________ not good at dealing with constant media attention.
| A．had been | B．has been |
| C．am | D．was |
—Alas! I have left my key to the office in my car.
—Don't worry. I ________ it for you. Wait a minute.
| A．get | B．am going to get |
| C．will get | D．am getting |
—Have you ever been to Singapore?
—Yes, I ________ there three times in 2009 alone.
| A．have been | B．have gone |
| C．went | D．had gone |