—Jenny did very well in maths exam. ---- Oh, yeah ! She is _____ maths.
I didn’t understand my parents why they are so strict ______ me ______ my schoolwork.
Both red and black represent _____ . But I prefer to wear red when I feel tired .
He devoted all his time he had _____ others.
Young people must be ready take new challenges .
We are happy Mrs. Wang because she always her help to us .