We ______ to clean the blackboard every day.
. ______and ______,they ran out of room.
. .I like ____in the autumn when the weather is clear and bright.
. _______,his idea was accepted by all the people at the meeting.
. .I really don’t know______I had my money stolen.
. What a pity! I missed meeting my boss at the airport because my car was ______ in the traffic jam.