When first to his new classmates, the little boy felt shy and said nothing.
| A．introducing | B．introduced | C．introduce | D．being introduced |
The Great wall is the only one of the buildings on the earth_____ seen from the moon.
| A．which is | B．which are | C．that are | D．that is |
Is there anything ________ I can do for you?
| A．which | B．who | C．that | D．whom |
This is the first American film _______ I have ever seen.
| A．where | B．which | C．who | D．that |
Guilin is a city _______ has a history of more than 2,000 years.
| A．where | B．which | C．who | D．whom |
One million people of the city, ______ thought little of the event, were asleep as usual that night.
| A．where | B．which | C．who | D．that |