Choose the correct word to complete the sentences.

1 I think my cousins are going to arrive late / lately – they always do!
2 It's dark in here – we can hard / hardly see!
3 My sister plays the guitar really well / good .
4 I can understand Josh – he speaks clearer / more clearly than David.
5 Do you work quicker / more quickly when you're stressed?
6 Oh no! It's raining bad / worse than ever!