[ Verb to be ]
They ____ brushing their teeth.
A. is
B. am
C. are

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Common Error › ViewThere we as a fight ………… two boys
A. among
B. between
C. with
D. on
Grammar › View
By 2040 we _______ only processed food.
A. ate
B. will be eating
C. eat
D. will have eaten
Simple Past Tenses › ViewLast weekend, we ______ a family photo at the beach.
A. take
B. took
Grammar › View
Sorry, I listening. What did you say?
A. weren’t
B. was
C. were
D. wasn’t
