中国大学MOOC: This paint can be used individually or in _________.
举一反三
- This paint can be used individually or in _________. A: combine B: combination. C: combat D: combustion.
- These paints can be used individually or in ________ (combine).
- 中国大学MOOC: Terrace can be used to ______________.
- 中国大学MOOC: Posters can be used for advertising.
- 中国大学MOOC: Excuse me can be used when .