问题

ndred percent _______ to your studies, though itcan be lonely and no fun at all, will leave precious marks on your youth.

A:commitment
B:attention
C:reference
D:reaction

正确答案是：

同类题型

Would you like some _________— No, thanks. I’m not thirsty.

______ a boy. My name is Mike.

He go to school early, but now he goes to school late.

Why is he so happy—He __________ the volunteeringclub and works for the old people.

．_________youdon’t go there is none of my business .