[ Conditional Sentences ]
Polar bears won’t find enough to eat_____ we do more to protect their environment
A. if
B. unless

Random Topics:
Modals: Possibility, Necessity, ExpectationGrammar (Adjectives)Present Perfect & Past Simple TensePresent Simple, Present Continuous or Present PerfectVocabulary and GrammarSubject Verb Agreement and Verb TensesGrammar - FragmentsPassive Voice, Question Tag, PrepositionsPresent, Past and Future TenseGrammar / PronounsOther quiz:
Grammar › ViewI don’t understand why after 2001, they _____ any movies about historical figures.
A. didn’t make
B. don’t make
C. weren’t making
D. haven’t made
Tenses › View
I (never/try) Pho until I (come) to Vietnam.
A. had never tried, came
B. have never tried, come
C. never try, comes
D. had never tried, comes
Grammar › ViewThis … Amy.
A. Is
B. Am
C. Are
Subject Verb Agreement › View
The computer on the desk (needs/need) to be fixed.
A. needing
B. needed
C. needs
D. need
