His ability has never been in doubt—-the question is___________ or not he is prepared to work hard.

The front page was full of the reportsgiven by the reporters ________ the scene of the road accident

The recent popularity of children’s books has made the public _____ that there’s a huge market out there.

Your friend is . Does he often you

．MsLi’s business _________ very quickly. She opened her first store two years ago;now she has fifty stores all over the country.