― Has Jackson finished his work today? ― I have no idea, but he ______ it when I saw him this morning. 
#103638
A
had done
B
would do
C
was doing
D
would have done
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My son __________ his clock  when I went to get a cup I __________ in his study.
#103412
A
was winding up; had left
B
would up; had forgotten
C
had wounded; left
D
was winding up; forgot
Bob would have helped us yesterday, but he ________.
#99049
A
was busy
B
is busy
C
had been busy
D
will be busy