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