[ Dependent Preposition ]
The doctors had to operate ____ his knee after the injury.
A. on
B. at
C. in
D. for
Random Topics:
PunctuationPrepositions and ConjunctionsPast Simple - Present PerfectNoun PhrasePast Perfect Tense and Past TenseDefinite and Indefinite ArticleApologizingThe Past SimpleConjunction: Because and SoGrammar: Simple Past and Past ContinuousOther quiz:
Grammar › ViewMy Mum was very busy at work, but she _____ take a short holiday over Christmas.
A. should
B. was able to
Grammar › View
Choose the appropriate demonstrative pronoun: “Look at _ clouds in the distance.”
A. this
B. that
C. these
D. those