1) don’t worry! i (tidy) the house by the time they come. 2) this time next week we (sit) the mid-year test. 3) i’m sure he (agree) to show us how to use the internet. 4) they (be) married for thirty years this january. 5) people (start) living on other planets in 50 years’ time. 6) well, i’m sure, in two days from 3 till 5 o’clock they (swim) in the pool as usual. 7) i’m sure he (buy) a new car by the time he graduates. 8) i’m tired. i think i (stop) reading for a while. 9) this time tomorrow he (take) a shower. 10) if you follow my advice, you (pass) your exams with flying colors. good luck!