[ TOEFL Grammar ]
___ caused the fire is still unknown.
A. What
B. That
C. Whether
D. How
Select your answer:
Random Topics:
Interjections, Tag Questions and Nouns of Direct AddressVerb + Infinitive or GerundPassive and Active SentencesPersuasive TextGrammar and PunctuationPast ParticiplesPRESENT SIMPLE - CHILDRENVerb, Object, PrepositionTo Infinitive or Bare InfinitiveConditional Sentence 0, 1Other quiz:
Grammar › ViewThe Himeji Castle ______ built in the 14th century.
A. was
B. were
C. had been
D. has been
Vocabulary › View
Taylor Swift is so ________, she was able to purchase a new car for some of her biggest fans.
A. spacious
B. poor
C. wealthy
D. sentimental