Заполните пропуски глаголами в нужной форме

1. What ... you doing at 9 a.m. yesterday?
I...checking the tackles
...you often check tackles?
I certainly...

2.Where ... the third officer?
Ten minutes ago he...in the wheelhouse
... he still there?
No, he...

3. When ... the second officer relieves you of watch?
Where ... you go after your watch?

4.What ...the electrician doing when you saw him?
He...repairing the ventilator
...he often do it when on watch?
I think he...
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