[ Grammar ]
The dog ……….. barking at the stranger.
A. is
B. are
C. the

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Prepositions & Modal VerbsAdjective + to + VerbSimple Compound and Complex SentencesConnectorsZero ConditionalNoun ClausePresent Simple & ContinuesFigurative LanguageGrammar-Verbs & Nouns Singular, Plural, GenderPast Perfect and Past Perfect ContinuousOther quiz:
Quantifiers › ViewIs there ___________ sugar?
A. any
B. many
Homonyms › View
Would you like ___ dance?
a. to
b. too
c. two
Hey Rina, can you help Joko figure out the comparative form of the adjective ‘happy’? Let’s see if you can find the right answer!
A. happier
B. happiest
C. happyest
D. more happy
Grammar for TOEFL › View
Rarely _____ located near city lights or at lower elevations.
A. observatories are
B. are
C. in the observatories
D. are observatories