中国大学MOOC: Unfortunately there was _____ to prevent the accident.
举一反三
- Unfortunately, those who_____ the accident cannot recall what happened, Therefore the cause of the accident remains a mystery.
- It was an ___________ accident.那是一次不幸的事故。 A: unfortunate B: unfortunately
- Simon was involved in the accident. A: was B: accident C: / D: /
- 中国大学MOOC: I like cats but unfortunately Im ______ to them.
- 中国大学MOOC: You should take complete _____ for the accident.