Shelly had prepared carefully for her English examination so that she could be sure of passing it on her first .
______ is a waste of time spending many hours ______ computer games every day.
He is a man of great experience ______ we can learn a lot.
— After I expressed how sincerely I wished to get his help, he agreed to help me at last. — I can understand. ___________ .
All those second-hand goods are sold at ________ before.
At school, our social circle is limited and we don't communicate with anyone _______ people around us.