1.Aftertenhours'operation,thedoctorsmanagedto____theone-year-oldtwinatthehead.
A.isolateB.separateC.divideDremove
为什么选C不选B
2.--whereisjack?
----well,he____you___here,orelsehewouldbehererightnow
A.doesn'tknow,areB.hadn'tknown,wereC.didn'tknow,wereD.hasn'tknown,were
为什么选A不选C
3.allofthemfeltnecessarythatthey___themeeting.
A.attendB.weretoattendC.attenedD.wouldhaveattended
为什么选A不选C