Respuesta:
Aquí están las respuestas con los adverbios subrayados y las formas adjetivales correctas:
0. It was a difficult situation, but you handled it cleverly. clever
1. I saw you deliberately hit your little brother! deliberate
2. Cats walk silently so they can attack their prey. silent
3. My teacher speaks so quickly that I have trouble understanding her. quick
4. I accidentally dropped my favorite mug and broke it. accidental