Adverb or Adjective?

John held the plate _________________. (careful / carefully)

Julia is a _________________ person. (careful / carefully)

I ran _________________ to the station. (quick / quickly)

The journey was _________________. (quick / quickly)

She sang _________________. (happy / happily)

You sound _________________. (happy / happily)

That was a _________________ answer. (clever / cleverly)

She answered _________________. (clever / cleverly)

I speak English _________________. (well / good)

Her English is _________________. (well / good)