[ Grammar ]
The planets are roughly Jupiter-size, the researchers estimate, but their orbits are much ________ out, at 12 billion and 21 billion kilometers.
A. farther
B. further

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Grammar - must & have toMaritime Vocabulary and GrammarArticles and NounsSentence and FragmentGrammar ElementaryDo not or Does notSubject Verb Agreement; Indefinite PronounsMixed TensesPerfect Tenses of VerbsGrammar - TOEICOther quiz:
Grammar › ViewHe didn’t ___ TV yesterday. He doesn’t ___ TV at all!
A. watch / watch
B. watch / watches
C. watching / watching
D. watched / watched
Grammar › View
Most of the girls __________ here.
A. sleeps
B. sleep
C. slept
D. sleeping
Conditionals › ViewI’m sure you’ll pass the exam as _____ as you study hard.
A. short
B. long
C. providing
D. condition
Conjunction › View
The florist delivered red roses ________ the customer wanted pink ones.
A. but
B. because
C. so
