Помогите!!

Fill in the gaps with one of these    words.

 There is one variant (a–f) you do not have to use.

1) I sometimes … exercise in the morning. a) are
2) I … get up late tomorrow, I think. b) will
3) Where is your brother? – I …seen him. c) can
4) Why … you stay at home last weekend? d) did
5) …you see John over there? e) haven’t
f) do