His mother needs a m_______ operation at once .

问题描述:

His mother needs a m_______ operation at once .
He has _____ _____ _____ (用完)all the exercise-books .
There are many people ____ ____ ____ ____(面对这些挑战).
I feel ____ ____ _____ _____ (非常幸运的拥有) the dog .

medical
already used up
faced with these challenges
so luck to own