Verified answer

1 had been thinking

2 had finished, made

3 happened, were driving

4 have known

5 has loved, met

6 had been taking, gave

7 had he done, offered

8 has been

9 has always wanted, has never managed

10 had waited, finished

11 had gone, began

12 have been waiting

13 rang, was having

14 have asked

15 hadn't written

16 had lived, moved