What impresses me most is _________ he appears in front of others, he wears a sincere and charming smile.
A. which B. that C. where C. that whenever
.（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 |
. Listen! Do you hear someone __________for help?
| A．calling | B．call | C．to call | D．called |
Dina, _______ for months to find a job as a waitress, finally took a position at a local advertising agency.
| A．struggling | B．struggled | C．having struggled | D．to struggle |