______ about the missing boy’s safety, the police stepped up their search.
I hope _____ the job she's applied for .
—Would you like _______ , sir? —No, thanks. I have had much.
Every minute is made full use of _______ our lessons.
Was it through Mary , ____ was working at a high school , _____ you get to know Tom ?
Mary couldn’t make herself _______ attention to because her classmates made so much noise.