Open the brackets.Use present simple or the future simple. 1. I don't know when my elder brother 1) _____ (come) back home.If he 2)_____(come) after eight,he 3)_____(miss) his favourite TV show. 2.When Jack 4. _____(return),he 5)_____(help) us; but I don't know yet when he 6)_____(come) back. 3.If the ecological situation 7) _____(improve), people 8) _____(feel) much better; but we still don't know when it 9) _____(happen) 4.He 10) _____(not,tell)you anything if you 11)_____(not,ask); but I'm not sure if you 12) _____(be) brave enough to ask. 5. If it 13)_____(stop) raining, we 14)_____(go) picnicking. But I'm not sure if it 15) _____(stop) raining at all today.