---What’s wrong with you, Jack? You look tired.---I ________ to prepare for the final exam last night.
---I feel _____ hungry now. ---- Why not go for dinner with us .
-----How ____you are coughing! -----Yes, I have had a ________cough since last week.
----Why are you so tired these days? ----- Well, I have _____homework to do.
----How was your trip to Beijing? ----We really enjoyed ________.
____the end of the day, we were very tired.