[ TOEFL ]
Researchers have long debated _____________ Saturn’s moon Titan contains hydrocarbon oceans and lakes.
A. over it
B. whether it
C. whether
D. whetherover

Random Topics:
QuantifierConditionals III - Mixed 1st, 2nd & 3rd ConditionalsRun-On SentencesPresent Continuos TensePossessive Adjectives VS Possessive PronounsTime Clauses of FuturePhrase or ClauseNoun ClausesWh QuestionsPast Perfect Simple TenseOther quiz:
Passive Voice in Past and Present Tense › ViewA child from a poor family __________ to work.
A. was force
B. was force
C. were forced
D. was forced
Conditionals › View
If babies are hungry, they _______________.
A. cry
B. cried
C. had cried
D. cries
Tenses › ViewThis woman (have) __________ dinner at school every day.
A. Present Continuous – is having
B. Simple Present – has
C. Present Continuous – has
D. Simple Present – have
Mixed General Quiz › View
People who flock down to Arizona for the winter to ___ the cold winters are called snow birds.
a. enjoys
b. hate
c. escape
d. dislike
e. abstain
