[ Vocabulary and Grammar ]
Select the correct preposition: He is proficient ________ multiple languages.
A. in
B. at
C. on
D. to

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Zero & First ContidionalPast Perfect and Past Perfect ContinuousInfinitive and GerundsModal Verbs of ObligationMiscellaneous Grammar UsagesComparative and Superlative AdjectiveBasic GrammarAuxiliaries VerbGender and GrammarConjunctions, Interjections and Sentence TypeOther quiz:
Tenses › ViewI ____ to Paris this time tomorrow.
A. will fly
B. will be flying
C. am going to fly
D. am flying
Noun and Pronoun › View
My apple tree has many …..
A. Leaf
B. Leaves
C. Leafs
D. Leavs