[ Grammar ]
My mother and sister __________ at the mall.
A. is strolling
B. are strolling
C. were strolling
D. will be strolling

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Tenses › ViewWrite a sentence using simple past continuous tense.
A. He was reading a book when the doorbell rang.
B. She cooked dinner when the phone rang.
C. They were playing soccer when it started raining.
D. She was cooking dinner when the phone rang.
Grammar › View
_____ have made a billion dollars last year.
A. His father is thought that
B. His father is thought to
C. It is thought
D. It is thought that his father