---how many students are there in the classroom? ---_____Idon’t know where they have gone.
I’ve got __________ pen friend who comes from __________ European country.
— Shall I buy this toy for little David? —__________. He might already have it.
--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.