be busy with
A is busy,but happy.=>x=>A is busy, but A is happy. A...is busy and happy.=>o A is busy, and happy.=>x=>A is busy and happy. A is busy, but A is happy.=>o A is...
You shall say "be busy with" needs to follow with an "object". Therefore, you... the way, you can also follow with a "noun clause", for example: I am busy with what my teacher has assigned me to do.
...am very busy lately. 是錯誤的用法,因為時間點不對. 更正： I am busy today. I was busy three hours ago. I was...