The workers ___ busily when the boss came to look for something she ___ in the office.
#103985
A
had worked; had left
B
were working; had left
C
working; had left
D
had worked; left
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 Materials of this kind ____ once ____ on the wall.
#103555
A
don’t wash, painted
B
don’t wash, painting
C
aren’t washed, painted
D
aren’t washed, painting