The poor boy seems _____ the news that his father died in the car accident for there is no sign of sorrow on his face.
| A．not to be known | B．not to have received |
| C．to have not received | D．not to know |
(安徽卷30). He had wonderful childhood, _____with his mother to all corners of the word
| A．travel | B．to travel | C．traveled | D．traveling |
.(北京卷21). at my classmates' faces, I read the same excitement in their eyes.
| A．Looking | B．Look | C．To look | D．Looked |
.（北京卷25）. I'm calling to enquire about the position in yesterday's China Daily.
| A．advertised | B．to be advertise d |
C．advertising | D．having advertised |
. In April, thousands of holidaymakers remained abroad due to the volcanic ash cloud.
:
| A．sticking | B．stuck | C．to be stuck | D．to have stuck |
.Lots of rescue workers were working around the clock ,supplies to Yushu, Oinghai province after the earthquake.
| A．sending | B．to send | C．having sent | D．to have sent |