Tom and his sister ______ to the barbecue last Saturday.They were very happy.
A:have invited
B:were invited
C:were inviting
D:invited
轮船招商局 《定军山》剧照 剪辫子
下列金属中,活动性最弱的是 ( )
选出有错别字的一项,将它的字母填入括号内 ( )