She hasn't eaten anything since yesterday. She_____ be really hungry.
Chọn đáp án C
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When my father was young, he _____ work in the garden for long hours.
I put my keys on the table, but now it's gone. Someone_____ have taken it.
Daisy is reading her English test because she has a test tomorrow. She_____ be studying.
My mother permitted me to go out at night. She said, "You_____ go out tonight".
He_____ have committed the crime because he was with me that day.