Unit 7
　　1. Tom should__________________________(明事理，不至于找迪克帮忙).
　　2. __________________________(打碎的玻璃杯怪不着孩子们), because the room was too dark.
　　3. None of us__________________________(期望主席在晚会上露面), because we thought he was still in hospital.
　　4. There was a big hole in the road __________________________(影响了交通).
　　5. He is quite sure that_______________________(对他来说完成任务是不可能的) within two days.

　　Unit 7
　　1. know better than to ask Dick for help
　　2. The children were not to blame for the broken glass
　　be not to blame for
　　3. expected the chairman to turn up at the party
　　4. which held up the traffic
　　5. it's impossible for him to fulfill the task