Ⅰ．题目略
1．go off
2．picked up
3．fell asleep
4．died down
5．in silence
6．take down
7．At first
8．in a mess
9．wake up
10．Make sure
Ⅱ．题目略
1．at the time of
2．was sweeping
3．while； was doing
4．make me happy
5．what you did
6．was finished
7．when he went
8．fell asleep
9．remember calling
10．at first
Ⅲ．题目略
1．at the time
2．What was, doing
3．Was； watching
4．wasn't taking
5．they weren't
Ⅳ．题目略
1．The llames finally died down．
2．Reporters took down his every word．
3．They finished their meal in total silence．
4．The room wasin amess．
5．I remember posting the letter．