I can never forget the days _____ we worked together and the days _____ we spent together.A. when; which B. which; when C. what; that D when; when
—Who has made a mess in my room? —Who elseit but your naughty son?
If the prediction for the earthquake ________ more accurate, we would have been more prepared and many more lives would have been saved.
—Where is Bob? I cannot find him anywhere. —Hehave been off long. I heard him make a call just now.
Class regulations require _____ is the last to leave the classroom _____ off all the lights.
What impresses me most is _________ he appears in front of others, he wears a sincere and charming smile. A. which B. that C. whereC. that whenever