—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
---Why didn’t you come to Mike’s birthday party yesterday?-----Well, I _______, but I had something important to do at the moment.
----- Foreign trade has been developing very fast in Guangdong.------Yes, Guangdong is China’s largest province ______ foreign trade volume.
When____to danger and conflict, men tend to increase blood pressure, ___nervous or anxious.
Ladies and gentlemen, I have the great _____ of introducing our speaker for tonight.
The beginning of the story is excellent, ____is the ending, _____leaves us much to think.