_____ he met with the difficulty did he realize the importance of group work.
Specialists may be useful to _____ a situation and suggest solutions.
Problems _____ because they were lack of communication.
While he was ______ about in the street, Mary came up to him.
---- I must be off now. See you! ---- ________. See you!
In order to change attitudes ________ employing women, the government is bringing in new laws.