Tom ____his homework yesterday, because he was in hospital all day.

–Do we have to talk with Jack about that matter?–Yes, I think we __________.

(2013·湖南长沙四校二模)—Is the letter from your mother?—Yes.But she ________the letter herself，because she doesn’t even know one word.

 ---Good morning. I’ve got an appointment with Mr Smith in his office. ---Morning. You ________ be Mr Jones. This way, please.

 According to the agreement, nobody _______ let out how they spent the three days in the cave.