Answer:
1.B
2.A
3.A
1.tā zài xuéxí shàng zǒng shì bùkěn xià gōngfū.
他在学习上总是不肯下功夫。
He always refuses to work hard on his studies.
2.suīrán zhè jiàn shì hěn máfan, dànshì wǒ fēicháng yuànyì qù zuò.
虽然这件事很麻烦,但是我非常愿意去做。
Although this is tough, I am very willing to do it.
3.shì wǒ zìjǐ yuànyì de, méiyǒu rén qiǎngpò wǒ.
是我自己愿意的,没有人强迫我。
I want to do it, no one forced me to.