—Is the letter from your mother?—Yes.But she ________the letter herself,because she doesn’t even know one word.
Does ______ matter if he can’t finish the job on time?
I don’t think ____ possible to master a foreign language without much memory work.
Is ____ necessary to complete the design before National Day?
Was it during the Second World War_____ he died?
Joan had often heard____ said that Marley had no money.