Have you made an apology ______ him ______ breaking his window? —Yes, I have

_______ is that quilt–It’s black．

How about the pollution in the countryside— Luckily, it’s not as serious as _______ in the big cities.

She asked us _____ the dialogue and try to recite it.

He is doing a hard job.Work starts at 7 a.m.every day and goes on until late afternoon onlya break at midday