Understanding Slow and Slowly

Which of the following statements is true about the word 'slow'?

• 'Slow' is more formal than 'slowly'.

• 'Slow' is only used as an adjective.

• 'Slow' can be used as both an adjective and an adverb.

• 'Slow' is only used as an adverb.

In formal writing, which of the following is correct?

• Drive slow

• Go slowly

• Go slow

• Drive slowly

What is the correct adverbial form in the sentence: 'The engines start up ____'?

• slow

• slower

• slowly

• slowest

Before Jake's hip surgery, his gait was described as:

• painful and slow

• painfully and slowly

• painful and slowly

• painfully and slow

When watching the clock, time seems to go:

• slowly

• slow

• slower

• slowest