Volunteers are always ready to help others and never want to ask for anything __________.
The director is going on business next week and the department will be left ______Jack.
During adolescence--- ______time of life between child and adult, teenagers want to be __________part of the group.
—— Do you think you can repair this machine without help?—— _________. This is not the first time for me to do so.
To some people, happiness is __________ by family and friends, while to others, it means ___________ success.
He got up very late, _________ his school bag, and _________ to his school at once.