A．seriouslyB．strangelyC．nervouslyD．personally A: seriously B: strangely C: nervously D: personally

The salesman approached the house cautiously because of the vicious dog.（） A: nervously B: bravely C: carefully D: deliberately

The salesman approached the house cautiously when he saw the vicious dog at the door. A: carefully B: deliberately C: nervously D: bravely

He looked ______ over his shoulder, making sure no one else was listening. A: nervously B: emotionally C: bravely D: largely

He looked ______ over his shoulder, making sure no one else was listening. A: nervously B: emotionally C: bravely D: D. largely