[ Subject Verb Agreement ]
The Earth and Pluto (is / are) the only two planets in the solar system believed to have a single moon.
A. is
B. are

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going toAdverb of ConcessionHave vs. HasPresent Simple and Continuous TenseGrammar MistakesPreposition (at,in,on)Modals and InversionFuture Simple TenseWould/would like - affirmative/negativeProverbsOther quiz:
Grammar › ViewI always listen to people very _________.
A. careful
B. carefully
Grammar › View
I (type) ____________ the letter all day.
A. have been typing
B. have typed
C. has been typing
D. has been typed