Which word has the same long vowel sound 'o' as in the word cone?

Which word in the sentence tells about something that already happened? The boy painted a nice picture in his Art class.

Which word has the same long 'o' vowel sound as the word 'nose'?

What is the subject of the following sentence? The big brown dog runs after the ball.

What is the correct end mark for this sentence? Why are you late