--- The little girl dances so well. Where was she trained?-- She learns all by herself. She ______ goes to any training class.
---- Is the physics problem _________?---- Yes, I can work it out _________.
Don’t worry, Sir. I’m sure I can run _________ to catch up with them.
---- I watched the TV program last night. ---- _________.
----_________ a year does your school have sports meetings? ---- Twice a year.
About _________ people are in the People’s Park at the weekends.