let any failures discourage you, for you can never tell ________ close you may be to victory.

I can hardly believe such a little boy gets up______ 5:00 ______ 6:00 every morning.— What a hard-working boy!

下列句子中加横线词的解释全都正确的一项是（ ）

_______we admit that there are still some problems about NMET,we don’t mean that it is of no use

Great changes have taken place in that school. It isno longer_____ it was 20 years ago,__________ it was so poorly equipped.