--The man in a black suit _______ be our youth worker.--- I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.
— Be careful! There is _______ dog lying at the gate. — Thanks a lot.
---What did Jack ask you just now? --He wanted to know how long ________ when I reached the cinema.
---I often chat with my friends on the Internet. ---You are so smart! Will you please tell me ________?
--- The woman ______ is reading the book over there is a volunteer? ---Yes. She is very kind. She’d like to ______sick kids in hospital.
---Let’s go fishing if it ______ this weekend. ---But nobody knows if it _______.