——What’s this?——______ a key.
He used to _____ with her parents, but now she is used to ____ with herclassmates at school.
Did Tom tell you _____________?
The two old men ______ each other since 1970.
---Your brother often disagrees with you, _______ he ?--- _______. We often have diifferent opinions.
____ of the students in our class is interested in skating.