[ Verb Forms ]
Fill in the blank with the appropriate present tense form of ‘to be’: ‘They ___ siblings.’
A. were
B. is
C. are
D. am

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Vocabulary › ViewWhat is a glow in the night sky produced in the upper atmosphere by particles from the solar wind interacting with Earth’s magnetic field called?
A. Corona
B. Aurora
C. Photosphere
D. Sunspot
Present Perfect › View
Our class __________ to go to the mountains on Saturday.
A. have decided
B. has decided
C. haas decide
D. have decide