Put the verbs in brackets into the future simple tense i think we two return tickets (to buy) kate ten tomorrow (to be) my aunt to canada next summer (to go) i you in the evening (to phone) i,m sure our 3-days tour more thav 5000 roubles (to cost

I think we'll buy two reyurn tickets 

Kate will be ten tomorrow (to be)

My aunt will go to Canada next summer (to go)

I will phone you in the evening (to phone)

I'm sure our 3-days tour will cost more thav 5000 roubles (to cost)