Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
A、canalSometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.
Whathesaidinthemeeting_______everybodypresent.
Muchofthenewsprovidedbythisnewspaperis_______,notforeign.
Wecannottrusthimanymorebecauseheoften________hisduty.
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.
