A good student is good at _______ what the teacher says at once when hearing something important in class .
__________at the news that she did nothing but _____herself in bed.
Only ______ do the job and only in this way _____ do the job well.
She was greatly shocked at the scene before her eyes. Never did she expect that local conditions___________be so awful.
Only when the villagers were faced with water shortage___ how serious the problem of water pollution was.
Only by practicing every day ___________ English well.