中国大学MOOC: We know that poverty is the single greatest ____ to development and change.
举一反三
- We know he is the greatest musician of our time.
- 中国大学MOOC: There are many little things we can do to a difference for climate change.
- 中国大学MOOC: Party A shall the other party in writing of any change in address within 90 days of the effective of the change.
- 中国大学MOOC: Now we know that the fishes in the sea are all __________.
- 中国大学MOOC: According to the author, we should be polite not only to the people we know, but also to strangers.