[ TOEFL Grammar ]
He was the only one ___ could solve the problem.
A. which
B. whose
C. who
D. whom

Random Topics:
Adverb Identification, Function, and FormationSimiles and Body IdiomsVerb FormConjunction: Because and SoGrammar - Verb FormsSynonyms and VocabularyVerb 3 formsSports VocabularySo / Neither / Either / TooProgressive TenseOther quiz:
-ing / Infinitive › ViewShe tends … her work the day before it’s due
A. to finish
B. finishing
C. finish
Sit vs. Set › View
She ___ the clock for 5 p.m.
a. set
b. sat
c. seated
____________ elbow has black smudges on it.
A. You’re
B. Your
Grammar › View
What’s the rule for using “who” and “whom”?
A. “Who” is always used at the beginning of a question
B. “Whom” is used for formal writing, “who” for informal
C. “Who” is a subject pronoun, “whom” is an object pronoun
D. They are interchangeable in modern English
