--- Would you mind _______ some questions?--- No, ________ . Go ahead.
--Thank you for helping me a lot.---_________________.That’s what friends are for.
--- Could you tell me ? --- About one hour and a half.
--- Will he come? --- I am not sure ___he will come, but I never doubt ______he will help us.
--- Jack’s parents hardly have any spare time for him, ________they?--- _________,that’s why Jack often feels lonely at home.
---Do you know why people set off fireworks ? --- Well, in ancient China, people set off fireworks on New Year’s EVE that the loud noise could drive away bad spirits .