In Expressions^x, Commas^x, Question marks^x

Comma after 20 yrs Even so - incorrect use logically while the rates of growth might be different, we would probably say "rate" singular, applying to the collective rate - but yours is okay. "Who knows?" is a fixed expression, and doesn't refer to China & India...

Wouldn't the comma after challenge be an "Oxford" comma in this case? Supposedly not entirely necessary in BrE, right? Thanks for the tip on the informality of the "Sunday supplement" style (I like the expression). So I gather you would separate them and add question marks after each...

hi, i have a problem with expressions. i want to discuss some. i once wrote in my essay: 'eyes dilated, i watched and admired the heiroglyphics scraped out on the huge walls.' so tell me what is wrong with it because my teacher underlined the words 'eyes dilated' and wrote 'why, are you on...