英文問題!!!功課..20點

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onethe trainers there were very friendly because they always wore smiles . apart from training the dogs to obey rules , they realized dogs were curious about new places that they let the dogs e_____ the v_____, where it was as big as a golf course .

sugar was so i_________ that she learned a lot of skills there . for example , whenever the trainers p______ her head , she would give them hr hand . moreover , sugar was full of energy and never felt e______ . jason thought the training programme was a______ .