中国大学MOOC: Worthwhile topics usually address issues that have significant ________for the audiences as nobody wants to waste time and energy on meaningless things.
举一反三
- 中国大学MOOC: The irrelevant issues can waste time and make the goal inaccessible.
- Let’s ________time doing such silly things. A: don’t waste B: not to waste C: waste not D: not waste
- Usually the seller wants to give you things cheaper.
- 中国大学MOOC: The issues are considered ______ in that they have little or no effect on the overall outcome.
- 中国大学MOOC: You have to send the things at the _________.