The workers _____busily when the boss came to look for something she ______in the office. A had worked, had left B were working ; had left C working ; had left D had worked; left
---Would you mind my sitting here ____ lunch? ---______.
A. and have, No, not at all C. and having, No, thank you.
C. to have, Never, go ahead. D. and have, Oh, it’s my pleasure.