[ Preposition ]
He is aware ___ the risks.
A. of
B. on
C. at
D. for

Random Topics:
Relative Clauses & Real ConditionalsVerbs and TensesPast and Past ContinuousGrammar ElementaryPre-intermediateModal Verbs of Certainty and PossibilityHave GotNo Excuse Words / Conjunction SOPast Tense & Past Continuous TenseAdjective ClausesOther quiz:
Tenses › ViewShe’s ___ her mother some chocolates.
A. sented
B. sent
C. send
D. sended
Clause Markers TOEFL Grammar › View
Complete the sentence with the best clause marker:
The tribes _______ lived in the Great Plains used smoke signals.
A. that
B. wherever
C. how
D. what
Compound And Possive › ViewOur family tradition calls for all _________________ to bake a pie at Thanksgiving.
A. Mother-in- laws
B. Mothers-in-law
Modals › View
This exercise is really difficult. _____ me, please?
A. May you help
B. Could you help
C. Can I help
