Neverbefore_______sorapidlydevelopingasitistoday.
OppositionleaderswillbewatchingcarefullytoseehowthePrimeMinister________thecrisis.
Agriclturalchangesinthelate18thandearly19thcenturiesinEnglandweresogreatthattheywereworthyoftheterm“________”.
Duringthepasttwodecades,researchhas________ourknowledgeofdaydreaming.