— The number of wild lions in Africa (非洲) no more than 15,000 in the year 2010. — Like tigers, they are really in danger of dying out, too.
----Have you ever __________ Peter Tchaikovsky before?----Oh,. A Russian composer of classical music.
---How much difficulty did you have________________ this physics problem?---_____________. It's quite easy.
----______number of cars on the roads is growing too fast.----I agree with you. ______ number of problems have appeared already.
――Good morning! My name is Jenny. I work for a sports newspaper.――_______. What can I do for you?
――What did the Geography teacher ask you?――The question is, “ Do you know _______?”.