-She used to be quiet, didn’t she?-______. She was a girl of few words.A. Yes, she wasB. Yes, she didC. No, she didn’t.
---Do you know sound travels very fast? ----Yes. But light travels _______ sound.
Paper-making is one of _______ of ancient China.
Could you please give some _______ to the _______ teachers?
Please wait here. I’ll be back in _______ hours.
----Have you found your lost mobile phone? ----No, I haven’t found _______. I have to buy a new _______.