Along with the letter was his promise _______ he would visit me this coming Christmas.
| A．which |
| B．that |
| C．what |
| D．whether |
The girl sat in front of the television every evening, happy __________ anything that happened about the Olympic Games in London.
| A．to watch | B．watching |
| C．watched | D．to have watched |
Cao Cao's tomb is reported __________ in China, which attracts nationwide attention.
| A．being found | B．to be found |
| C．having been found | D．to have been found |
Lin Feng is said __________ abroad, but I don't know which country he studied in.
| A．to study | B．to be studied |
| C．to have studied | D．to be studying |
The engine just won't start. Something seems __________ wrong with it.
| A．to go | B．to have gone |
| C．going | D．having gone |
When he came in, I happened __________ my experiment in the lab.
| A．to do | B．to be doing |
| C．to have done | D．to be done |