[ TOEFL Grammar ]
___ caused the fire is still unknown.
A. What
B. That
C. Whether
D. How
Random Topics:
Contrastive ConjunctionsGrammar: SyntaxArgumentative VocabularyIndefinite and Reflexive PronounsLinking Words & PhrasesPast and Present Continuous tenseState Verbs and Action VerbsPast TenseIdentifying Sentence TypesPast Simple vs Past ContinuousOther quiz:
Grammar › ViewWe _________ to play Quizizz every week.
A. are want
B. want
C. wanting
D. are wanting
Active and Passive › View
The professor told him not to talk in class.
He ________________ by the professor not to talk in class.
_
A. has been told
B. was told
C. was being told
D. is telling
Past Tense › ViewNia and Nadya … Chicken steak last night.
A. ate
B. eat
C. eaten
D. eating
Grammar and Vocabulary › View
By_____1.500.000 tons of insects a year, birds greatly help American farming.
A. ate
B. eating
C. having eaten
D. eat
E. to eat