Topics: Preposition & Gerund
Brian really has to work _______ improving his vocabulary.
A. in
B. at
C. on
D. for
Select your answer:
Random Topics:
Relative Clauses PronounsPresent Verb TensesSimple present/ past/ future tenseIELTS VocabularyIf ClausesThe Structural Types of SentencesRecount Texts and TensesPassive Voice - Present Simple and Past SimpleVerb & GrammarDegree of ComparisonOther quiz:
Mixed General Quiz › ViewWhich of the following cannot use the suffix -ion?
a. collect-
b. correct-
c. exhaust-
d. predict-
e. put-
Grammar › View
I found his behaviour very ________.
A. threatening
B. threatened
C. threat
D. threatens