中国大学MOOC: I wonder how long ago this tradition _____.
举一反三
- I wonder how long ago ______.
- 2) — “We’re late. The play has started.” — “I wonder how long ago ________ (did it begin, it began).”
- How long ago ________ playing with soldiers?
- How long will the Thanksgiving celebrations be held according to the tradition?
- 中国大学MOOC: If the company was founded not long ago, there is no need to introduce its history.