— Can you work out the maths problem?— Sorry, I can ______ understand its meaning.
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.
The station is 2 kilometers ________ my home.