William found it increasingly difficult to read, for his eyesight was beginning to __________.
I have no idea ______ measures the government will take to stop the river from being further polluted.
Half of ______surveyed in 16 countries say they go first to their closest friends to share their deepest wishes and darkest fears.
I don’t know the meaning of the poem, because I have little ______with modern society.
Evidence has been found through years of study______children’s early sleeping problems are likely to continue when they grow up.
--- Shall we go for a drink at one o’clock this afternoon? --- ______. Will two o’clock be OK?