【题目】The important meeting ______ on a cold morning last year．

【题目】—Nice work．It took you______10 minutes to do the maths problem．

【题目】I will ______ the newspaper to see what happened yesterday．

【题目】Stone can be ______ building houses．

【题目】I think Edison is one of the greatest ______．

【题目】The air conditioning is ______ Qingdao．

【题目】This type of MP4 is my favourite，but I can't ______ it．

【题目】He has______ an interesting book that we want to read it．

【题目】Be careful______ the paper．It ______ easily．

【题目】______ he was tired，he went on working．