—Peter, we are good friends. We can help ____.—Yes, you’re right.
--- Time for bed, Dear. --- Not yet, Mum. I _____ until I _____ going over my lessons.
--- Alex, did you find the old house that you used to live in? --- Yes, but with much difficulty, for my hometown has _____ changed over these years.
--- _____ free lunches _____ to students in all schools in China? --- No, only in the countryside.
Zheng He is _____ great pioneer in exchanging cultures _____ Chinese people today still remember him.
--- It’s reported that vaccines(疫苗) for H7N9 bird flu may hit the market as early as May. --- Really? If so, we _____ depend on those from abroad.