[ Conditional Sentence ]
Trees won’t grow _______ there is enough water.
A. if
B. when
C. unless
D. as

Random Topics:
Grammar - Place and MovementSubjective and Objective PronounModal VerbsVerb PhrasesPronouns and AntecedentsPrepositions after VerbsVocabularyDEGREE COMPARISONAdverb ClausesModals and ConditionalsOther quiz:
Modal Auxiliary › ViewYou…..hear my uncle talk about his work in Bali.
A. Must
B. Should
C. Would
Grammar › View
lead _____ sth
A. about
B. off
C. to
D. from
