Many nations have promised to reduce greenhouse gas emissions, but are falling short of the _______ reduction of 25 to 40 percent of 1990 levels.
Though Jane speaks Russian well, she thinks it necessary to learn ___ foreign language.
___ speak Germany and ___ speak English.
My father began to learn English when he was in ___.
Could you ___ my meat ___for me please Daddy?
--Are you sure ____ you have seen this man?---Yes, I’m quite sure ___that.