—You look tired.  —Yes. I _____ non-stop until twelve o’clock.   
#103911
A
hasn’t been working
B
wasn’t working
C
was working
D
didn’t work
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Ann       me her address but I’m afraid I       it.
#104539
A
gave;have lost
B
has given;have lost
C
gives;lost
D
had given;lost
  I have no idea what _____ while I was asleep.
#100185
A
has happened
B
could happen
C
had happened
D
happened