Topics: 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
Select your answer:

Random Topics:
Articles and PronounsGrammar PhrasesPerfect and Past TenseDeterminersPreposition after some VerbsFuture Simple TensesComparatives, Superlatives & EquativesInterjection & Prepositional PhrasesTenses for HospitalitySimple present/ past/ future tenseOther quiz:
Grammar › ViewRarely _______ such a fierce debate during a company meeting.
A. has there been
B. there has been
C. have there been
D. there have been
Subject-Verb Agreement › View
Who __________ the new baby look like?
A. Does
B. Do
