Scientists and experts said it was a big ________in China's space history that Chang'e-II has been smoothly sent around the moon.
twice
They _______ me 300 yuan for the bike but I brought down the price to 250 yuan.
As regards health, I have nothing _____ to say since I have ________ of illness.
I have bought two ball-pens, _______ writes well.
Your plan means ________ more money,so I mean _______ it .