问题
On April 14, 2010, many people dressed in black with white flowers ______ their chests observed three minutes of silence in memory of the victims in Yushu Earthquake .
A:pinned in
B:pinned to
C:being pinned in
D:to be pinned to
B:pinned to
C:being pinned in
D:to be pinned to
正确答案是：
同类题型