1) Don't worry. I ....... ........ ........ the books by tomorrow. a) will have returned b) has returned c) will have been returning 2) By next month, we ......... .......... .......... studying online for 3 months. a) will have b) will have been c) have 3) I think robots ....................................... over the world by 2050. a) have taken b) will have taken c) will been take 4) By June, we ........................................... from high school. a) will have graduated b) will graduating c) will has graduate

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