Multiple choice

Directions: Choose the word or set of words for each blank that best fits the meaning of the sentence as a whole.

The techniques now available to livestock breeders will continue to be ______, but will probably be _______ by new ones under development.

  1. fruitful … reversed

  2. refined …upgraded

  3. inconvenient … reassessed

  4. used … supplemented

  5. harmless … improved

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A is wrong because of "reverse". You replace something by new one not reverse. B is wrong because refined and upgraded are somewhat synonymous. But indicates that both that blank can not be synonymous. D is correct because it says that available techniques will be used until new ones are added into them to improve them.