[ Prepositions ]
She’s been working hard _____ her English skills.
A. about
B. at
C. on
D. with

Random Topics:
Present Perfect SimplePossessive Adjectives and Possessive PronounsPassive and Active SentencesContractions and ConjunctionsTypes of Simple SentencesSynonym and AntonymDEGREE COMPARISONPast and Past ContinuousAsking & Giving AttentionAdjectives & PrepositionsOther quiz:
Grammar › ViewThat cake ________ it’s burning. I’d better get it out of the oven quick!
A. smells
B. smells like
C. smells as if
Grammar › View
a person who starts a fire in a building in order to destroy it
A. an arsonist
B. a burglar