--Where is Xiao Wang? --I don't know. He__________ be in the library.
Do you know when Mr Brown_______ ? When he_______ , please let me know.
_____ get a better score, she has been studying hard all day.
He said that his bike _____ stolen and he _____ telephone the police.
— It's late. I have got to leave now. — OK. _____.
Tommy was planning to buy a car the next week,______ he ______ enough for a used one.