Good vs. Well:  The rule of thumb is that good is an adjective and well is an adverb. Good modifies a noun; something can be or seem good. Well modifies a verb.

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I play tennis but I'm not very _____

Your test results were very _____

Because of a broken leg, I'm sure he won't feel ____ enough to play football next week

I didn't sleep very ______ last night

George speaks Spanish very _____

Maria's Spanish is very ____

She looks _____ for a 75-year-old grandmother!

I feel______ today. Thanks for asking