Question

.----Who are those people gathering in front of the building?
-----A group __________ itself the youth volunteers.

A．calling

B．calls

C．called

D．to be called

Answer 1

A

考查现在分词做定语，句意：--在大楼前聚集的人是谁？--一群自称为青年自愿者的人。说明这个空填定语，A group和call itself是主动关系，用现在分词做定语。选A。