The attempt and insistence on purchasing the Diaoyu Islands by Japan will ______ harm China-Japan ties．
| A．repeatedly | B．currently | C．potentially | D．eventually |
________ for children, the album became popular with parents ________ it came out.
| A．Designed; when | B．Designed; immediately |
| C．To design; as soon as | D．Designing; as |
I admire my English teacher. I can remember very few occasions ________ she stopped working because of ill health.
| A．that | B．when | C．where | D．which |
—Did you know more about the mine accident?
—Oh，sorry，I had no idea. I ________ the Rescue Center now.
| A．will be phoning | B．am to phone |
| C．will phone | D．phone |
—________ you interrupt now? Can't you see I'm on the phone?
—Sorry Sir, but it's urgent.
| A．Can | B．Should | C．Would | D．Must |
As is reported, it will be more than 20 years ________ humans are able to walk on Mars.
| A．before | B．when | C．since | D．after |