Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
A、canalIntheUnitedStates,theforeignpolicyisdecidedbythe________government,notbyeachstate.
This morning in the class, our teacher lost his ______at last because he could not stand any more.
Wecannottrusthimanymorebecauseheoften________hisduty.
Somelazymenwouldrather_______thanwork.
Sometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.
