1. CABCA B CDCDA CDB D B CBA
2. （1）Whathas happened: We have just moved
（2);This has not been easy
(.3); I have… put
(4); I have ever seen
(5) What has been happening: I have beenworking
(6);I have been trying
(7) have explained…have understood…Have youbeen listening…has been working/ has worked…has been earning/ has earned…hasshe earned…have not been listening
3. 1 carefully 2 hard 3 hard 4 late 5 nearly 6fast 7 high
4。 1 b 2c 3c4a 5b 6d 7 c 8 b 9a 10 c11b 12 d
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