The twins had been away for such a long time that many people in the village thought they ________.

When________totellthedifferencebetweenBritishandAmericanEnglish,thelinguistmadealongand________speech.

When you were in London, did you visit ________________ Tower, too?

analysis,criteria,diabetes,gentry,pants,physicsa.Singularonly:________________________________________b.Pluralonly:__________________________________________

Jameshasjustarrived,butIdidn’tknowhe________untilyesterday.