48.No one is allowed to ________ others do things against their wills.(A)force (B)attack (C) indicat
49.The residents on the island are worried that the upcoming typhoon may cause serious ________ to t
50.The latest model of the cell phone is a huge _________ success because many people went to buy it
1.Dr. Lin’s new invention took him a lot of time and _________, and he was very proud of it.(A)effor