enlighten/ discard/ restore/ fluctuate/ prejudice/ profit/ rival/ motivate/ implement/ investigate Western nations have older and shrinking populations since they entered the 21st century and their ________ birth rates have also posed problems.
举一反三
- Fill in the blanks with the words given below. Change the form where necessary. Each word can be used only once. enlighten discard restore fluctuate prejudice profit rival motivate implement investigate 5. Western nations have older and shrinking populations since they entered the 21st century and their _____ birth rates have also posed problems.
- Western nations have older and shrinking populations since they entered the 21st century and their _______ birth rates have also posed problems.
- Western nations have older and shrinking populations since they entered the 21st century and their ___ birth rates have also posed problems. A: fluctuated B: fluctuating C: fluctuate D: fluctuates
- Western nations have older and shrinking populations since they entered the 21st century and their __________birth rates have also posed problems. A: stable B: mobile C: constant D: fluctuating
- Western nations have older and shrinking populations since they entered the 21<sup>st</sup>century and their ____________ birth rates have also posed problems. A: flowing B: fluctuating C: floating D: drifting