1) We (not be able) … to gain this power until the current technology (be changed) … . a) won’t be able, is changed b) weren't able, was changed 2) We (tell) … him when he (return) …home from work. a) tell, returns b) will tell, returns 3) I (not pay) … you until I (get) … the pay cheque. a) don’t pay, get b) won’t pay, get 4) I (not talk) … with him until he (apologise) … to me. a) won’t talk, apologises b) don't talk, will apologise 5) When the phone (ring) …, somebody (pick) … it up. a) rings, will pick it up b) will ring, picks it up 6) Till the streets (be) … full of cars, I (stay) … here. a) are, will stay b) will be, stay

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