1) lf my train's on time, I'll _______________ on your door at ten o'clock sharp. a) be knocking b) have knocked 2) By the end of the semester, we will __________________ most of the material in the book. a) be covering b) have covered 3) By this time tomorrow, we'll _______________ to Hawaii for a two-week vacation! a) be flying b) have flown 4) We'll ____________ with the head of Research and Development at the conference next week. a) be meeting b) have met 5) I hope I'll __________ time to read the book before we meet to discuss it. a) be having b) have had

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