16. I’ve been working for “Mr. Z and Co.” ____ last summer. d) since
17. I _____ on this project for two months. c) have been working
1) came in, were writing
2) phoned, was having
3) was speakin, threw
4) met, were standing
5) bought, saw
6) were having, arrived
7) was sleeping, came
8) was having, brought
9) came, were sitting
10) was reading, sat down
1had analysed.decided
2warned.hadn't phoned yet
3entered