2) has lived, came
3)came, is speaking
4)were speaking, looked
5)were you doing here?- was preparing. how long were you preparing it?-had worked
6)has been teaching, broke out
7)has been studying
8)Have you ever been to London? -Yes, I have been there...
9)what is your friend doing now? -she is having dinner
10)bought, will show, come
11)will take , go
12)where are you going? - am going...
13)was walking , saw
14)read, gave
15)left, is living
16)will be discussing
17)is reading, gave
18) hated
19)haven't seen
20)are ready.