To understand the grammar of the sentence, you must break it ___________ into parts.
This is the reason ______he explained at the meeting for his carelessness in his work.
______ 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.