Though suffering constant noise from the outside world, little Tommy was still working with all his attention _____ on his unfinished warship model.
.So far, several cases of a disease, _____ as H1N1, are reported to have been found in the country.
— May I help you? —Yes, I'd like to try on some sports jackets just like _____ I'm wearing.
—Did Jack come back early last night? —Yes, It was not yet eight o'clock _____ he arrived home.
—May I tell this to my close friend? —No, you _________. Never let anybody else know about it.
--- Could you bring me that novel you _____________ me about when I dropped in on you? --- Sorry, I can’t. I have given it to a friend.