1.By the time the firemen (arrived), the house (was) ablaze from top to
bottom, but it (was) clear that if someone (had given) the alarm earlier, they
might (have stood) a chance of (saving) the building.2. I wish you (had told) me last week that you (were coming) to London. If I (had known) in time, you would not (have had to) stay in a hotel.3.Why
didn't you tell) me you (could lend me the money? I woulldn't have needed to (borrow) it
form the bank. 4. The driver said he could not (undergo) thorough
testing before he joined the competition. 5. It's time we (went). If we
do not (leave) now, we (will miss) the last train.6. Were you cut off while I was talking) to you just now? You (were)? I think something must (have gone) wrong with the telephone.7.The manager is talking to an important customer at the moment but he (will be) free
(to see) you presently. (Would you like to take) a seat for a few minutes?8.I know I ought to have written to you before, but I (have been) so busy recently that I did not (have) time for (writing) letters, I (would have telephoned) you instead, but I
(had forgotten) (your number.9. When I last (saw) him, (he was living) in London. He
(told) me then that he (was thinking) of (emigrating) to Australia, and he may
well (have done) so by now.10. I (am) very excited at the prospect of (going)
(skiing). It (would have been) the first time I (tried). I think there's nothing like
(skiing) for (making) a holiday enjoyable.11. I wish you (had let) me (know) you had not (been able) to come to dinner. I certainly would not (have gone) to all this trouble if I (had known).12. He said he did not (want) (to see) the firm as he (had heard) that it (was) not as good as the critics (suggested).