------What kind of ticket do you have?------ We have tickets $105 the hard sleeper.A. at; for B. for; at C. at; to
None of them knew what happened __________we told them about it.
The shopping mall will ________young people ________work.
---Look at the boy running on the playground. Is it David? ---It ______ be him. I saw him go to the teachers’ office just now.
The old man lives________, but he doesn't feel________.
— Mum, have you seen my mobile phone? —_________you bought last week? I’m sorry I haven’t seen _________.