[ Grammar ]
The patient will not recover unless he __________ an operation.
A. had undergone
B. would undergo
C. undergoes
D. was undergoing

Random Topics:
Definite and Zero ArticleConditionals / Unreal PastCohesive DevicesGrammar : can, could and be able toPast Simple or Past ContinuousPrepositions & Prepositional PhrasesBare Infinitive and To InfinitiveGrammar - Present Perfect with for and sinceModal VerbActive & PassiveOther quiz:
Adverb Clauses › View_________ you eat less sugar, you will definitely lose some weight.
A. even if
B. unless
C. even though
D. if
Vocabulary › View
Pardon
A. a release from the penalty of an offense; forgiveness of penalty, as by a governor
B. settlement of differences or agreement
C. left or deserted, as by the owner or guardian; abandoned
D. to reestablish the good reputation of (a person, one’s character or name, etc.)
Indefinite and Reflexive Pronouns › ViewAstronauts train ______ to live in zero gravity.
A. himself
B. themselves
Grammar and Vocabulary › View
S’tieng is ___________ ethnic group living mostly in ___________ southern provinces of Vietnam.
A. a/ –
B. the/ a
C. an/ the
