19. If you are not sure _______ your strengths and weaknesses ______, you may ______ a professional expert so that you can develop yourself to the full.
.Some companies have introduced flexible working time with less emphasis on pressure ____.
.From Mum’s love, patience and understanding, I have learned what a huge responsibility ___ is to raise a child.
.–Who has broken the window in my room? --Who else ___ it but your naughty son!
.______ , I believe, and you will find Tom is very outgoing.
.Nancy enjoyed herself so much ___ she visited her friends in Sydney last year.