It ____ be our headmaster. He has gone to Beijing.

—This wall of air is an effective answer to the problem  and it ____ work.  —But it is a question to put such a wall of air around the statue. 

I lost your address, otherwise I＿＿＿＿you long before. 

. If I ______ plan to do anything I want to，I’d like to go to Tibet and travel through as much of it as possible. 

Tom_____to several companies after he resigned his position as vice president, but he was rejected over and over again.