★ Word Form & Verb Tense
_____ there is no shortage of fresh water, wastewater is treated and turned into drinking water
A. ensure
B. to ensure
C. ensured
D. ensuring
Preview next quiz:
Most roads in the city have been planted with flowering trees since I last _____ it
A. would visit
B. visit
C. visited
D. had visited
Trending Topics
Loading...
About grammarquiz.net
GrammarQuiz.Net - Improve your knowledge of English grammar, the best way to kill your free time.