Thisrobotissupposedtosavealotoflabor,butitremainsaproblemifit______.
A、isItisnolongeraproblem_______thepoorchildreninthisdistrictcangotoschool.
Wehadn'tmetfor20years,butIrecognizedher_____Isawher.
Modernscienceandtechnologyhas_____communicationbetweenpeoplefarapart.
Partoftheworkistobefinishedtodayand______bythisweekend.
Duringthetouristseason,therearemanypeoplewanderinginthiscitytoseetheoldcastles_____inthesixteenthcentury.
