He played a trick ____ Jessy and he had to apologize _____ treating her ____ a nice dinner. 

Li Gang was required to apologize       the people present at the meeting __ what he had done．

—What led to his success ?—He succeed _____ working hard .

A notice was put ___ on the bulletin board saying that Tom would be put ___ as the candidate for the position of the general manager.

Although police could be seen everywhere, they seemed to be searching the houses almost ________.