25.The population of this city, forty percent of which _________, _________ 15% in the last three years.
A.are Germans, has risen by B.are Germen, has fallen by
C.is Germans, have increased to D.is Germans, have been reduced by
26. The students, _________ at the way the questions were put, didn't know the answers to them.
A.they being surprised B.surprised
C.their being surprised D.then surprised
