complete the sentences with one or ones

2. there are twoboys in the band. the tall......plays the drums
3. they sang two songs. which....did you like best?
4. i've seen them in concert twice. the last.......was in the park last summer.
5. i like all their songs but the earlier.....are great to dance to.
6. dave's got three guitars: a red.......and two black.......​