You will succeed in the end _______ you give halfway.

对下列句子中划线词的解释，不正确的一项是 （ ）

How wonderfully you are playing the piano! _________ do you practice it a week —Twice. Practice makes perfect.

Those who are _____ for small gains can never make great achievements. [ ]

idge I bought at the second-hand shopis almost new ________, it works quite well