When did you check the contents of C02 cylinders（）.
The volunteers found the test more difficult when they did it the second time.
2 Complete the sentences.► They have a very good relationship.1 When did they ____ a baby?
3.What did the player do when his way was blocked?
How did the audiences react when Waiting for Godot was performed in Europe in the 1950s?
The earliest theoretical work on drama is Plato’s Poetics .
When did Alice Munro win the Nobel Prize?
When did Ancient Egyptians celebrate New Year’s Day?
When did Cliff Young win the race?In the year ______.
When did the Red Kettle Christmas Campaign first start?
When did Romans celebrate New Year’s Day?
When did people do house cleaning in the past?
Why did Dr. Pan just taste a little bit of baked meat and the broth when he was at Dr. Hyle’s home?
When did the modern Olympic games kick off in Athens, Greece?
When did he win the China's Got Talent competition?
When did the person go shopping with her mother?
When did the name “Air Jordan” become well-known?
When the father and the son seperated,what did the father say?
What did the first salesman mean when he “showed his customer the door”?
What did Diana mean when she said “... putting a face to those figures brought the reality home to me” （Line 5, Para. 1）？
The consumption of beer did not go down when the tax was raised.
What did Dr. Jason s students do when he wrote a second edition？
--When did you feed the dog？ --____.
