1．They thought his behavior was abnormal (反常的)．
2．She has the potential (可能性) to become a worldclass pianist.
3．Used wisely，online games will become effective (有效的) teaching tools.
4．The rise in inflation was just one symptom (征兆) of the poor state of the economy.
5．The driver stepped on the gas and accelerated (加速) the car.
6．Laidoff workers cannot afford to purchase medicines from a chemist when they get sick，nor do their children keep a healthy diet.
7．As we know，Japan has long promised never to make or possess nuclear weapons.
8．Good financial accounts are vital to the success of any enterprise.
9．As we all know，the industrial revolution took place in England first.
10．People bite food，chew it and swallow before it is digested.
