中国大学MOOC:"Safety regulations were not strictly obeyed in the factory, so this tragedy didn't happen ______.";
举一反三
- I _____ tired yesterday, so I _____ go shopping with her. A: were, don’t B: was, don’t C: was, didn’t D: were, didn’t
- 中国大学MOOC: The suit ____ so much that we didn’t buy it.
- 中国大学MOOC: I’m sorry I forgot_ ______him about it, so he didn’t come.
- 中国大学MOOC: When we married we didn’t have a ______ , so we bought all our furniture second-hand.
- Prior to the late 1880s, most of us were so busy ___ to make a living that we didn’t care what the other people were doing.