When I _______ (go)to school this morning I ______ (see) a car running into a bus.
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This time yesterday Jack ______ (mend) his bike.
It was six. The Greens ______ (have) supper.
When you ______ (knock) at the door yesterday,I ______ (do) some washing.
When I arrived at his office,he _____on the phone.
A. was speaking
B. spoke
C. had been speaking
D. had spoken