I am busy ________ for the lesson.
Đáp án B
Busy doing sth: bận làm gì
Every magnet has (4) _______ poles, called north and south, at opposite ends of it: at the two ends of a horseshoes magnet, for example, or on the two sides of a disc.
_______ your effort and talent, we wonder if you can work full time for us.
We are _____ no obligation to change goods which were not purchased here.
I see John’s boasting again. I’ve heard him telling everyone he’s the best tennis player in the County. He is _______
You ______ so politely at the party. Everyone was casually dressed