中国大学MOOC: They work hard,but their efforts are not very____. (product)
举一反三
- They work hard, but their efforts are not very _________ (product).
- They work hard, but their efforts are not very __________.
- 中国大学MOOC: You______________ work very hard yesterday.
- They work hard, but their efforts are not very __________. A: concentrate B: productive C: enrolled D: schedule
- 中国大学MOOC: _______ the math problem is difficult, I’ll try very hard to work it out.