[ Preposition & Gerund ]
Brian really has to work _______ improving his vocabulary.
A. in
B. at
C. on
D. for

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Compound and Complex Sentences › ViewThe phone rang.
A. This is a simple sentence.
B. This is a compound sentence.
C. This is a complex sentence
Passive Voice - Present Tenses › View
The marathon ___ every year in our city.
A. is organizing
B. is organized
C. has been organized
D. organizes
Coordinating Conjunctions › ViewHe is allergic to peanuts, _____ he loves peanut butter sandwiches.
A. yet
B. however
C. and
D. because
Vocabulary › View
Exacerbate
A. Complicate; make worse
B. Deflate; let down
C. Eat
