题目内容：

She___when she began to talk about her mother.
A choked up
B choked off
选A..为什么?

优质解答

choked up (因激动)说不出话来
choked off 劝阻;阻止
这句话的意思是当她开始和她母亲说话时,她激动地说不出话.所以选A